diff --git a/public/userarea/add_record.php b/public/userarea/add_record.php
index fa711f7..4eafe9b 100644
--- a/public/userarea/add_record.php
+++ b/public/userarea/add_record.php
@@ -33,15 +33,26 @@ try {
     $stmt->execute([$templateId, $userId, $idclient, $importReferenceCode]);
     $iddatadb = (int)$pdo->lastInsertId();
 
-    // Create empty import_data_details for all mappings
-    $mappingStmt = $pdo->prepare("SELECT id FROM template_mapping WHERE template_id = ?");
+    // Create import_data_details for all mappings (with auto_value support)
+    $mappingStmt = $pdo->prepare("SELECT id, auto_value, manual_default, data_type FROM template_mapping WHERE template_id = ?");
     $mappingStmt->execute([$templateId]);
-    $mappings = $mappingStmt->fetchAll(PDO::FETCH_COLUMN);
+    $mappings = $mappingStmt->fetchAll(PDO::FETCH_ASSOC);
 
     if (!empty($mappings)) {
-        $insertStmt = $pdo->prepare("INSERT INTO import_data_details (id, mapping_id, field_value) VALUES (?, ?, '')");
-        foreach ($mappings as $mappingId) {
-            $insertStmt->execute([$iddatadb, $mappingId]);
+        $insertStmt = $pdo->prepare("INSERT INTO import_data_details (id, mapping_id, field_value) VALUES (?, ?, ?)");
+        foreach ($mappings as $m) {
+            $val = '';
+            $auto = $m['auto_value'] ?? 'none';
+            if ($auto === 'import_date') {
+                $val = date('Y-m-d');
+            } elseif ($auto === 'import_time') {
+                $val = date('H:i');
+            } elseif ($m['data_type'] === 'DATE' && ($m['manual_default'] ?? '') === 'today') {
+                $val = date('Y-m-d');
+            } elseif (!empty($m['manual_default'])) {
+                $val = $m['manual_default'];
+            }
+            $insertStmt->execute([$iddatadb, $m['id'], $val]);
         }
     }
 
diff --git a/public/userarea/get_clienti.php b/public/userarea/get_clienti.php
index 0e6dd83..7996167 100644
--- a/public/userarea/get_clienti.php
+++ b/public/userarea/get_clienti.php
@@ -74,10 +74,21 @@ try {
         throw new Exception("Massimo numero di tentativi raggiunto per $endpoint");
     }
 
+    // Cache file (1 hour TTL)
+    $cacheFile = __DIR__ . '/cache/clienti.json';
+    if (file_exists($cacheFile) && (time() - filemtime($cacheFile) < 3600)) {
+        readfile($cacheFile);
+        exit;
+    }
+
     // Esegui la chiamata con retry
     $data = makeApiRequest($api, $endpoint);
 
-    echo json_encode($data);
+    $json = json_encode($data);
+    if (!is_dir(__DIR__ . '/cache')) mkdir(__DIR__ . '/cache', 0777, true);
+    file_put_contents($cacheFile, $json);
+
+    echo $json;
 } catch (Exception $e) {
     http_response_code(500);
     $errorResponse = [
diff --git a/public/userarea/get_customfield_values.php b/public/userarea/get_customfield_values.php
index 5770073..71ea7a4 100644
--- a/public/userarea/get_customfield_values.php
+++ b/public/userarea/get_customfield_values.php
@@ -21,17 +21,26 @@ try {
     }
 
     $results = [];
+    $cacheDir = __DIR__ . '/cache';
+    if (!is_dir($cacheDir)) mkdir($cacheDir, 0777, true);
 
     foreach ($fieldIds as $customFieldId) {
+        $cacheFile = $cacheDir . '/customfield_' . $customFieldId . '.json';
+
+        // Use cache if fresh (1 hour)
+        if (file_exists($cacheFile) && (time() - filemtime($cacheFile) < 3600)) {
+            $results[$customFieldId] = json_decode(file_get_contents($cacheFile), true);
+            continue;
+        }
+
         $endpoint = "CustomField($customFieldId)?\$expand=CustomFieldsValues";
         $data = $api->get($endpoint);
+        $values = $data['CustomFieldsValues'] ?? [];
+        $results[$customFieldId] = $values;
 
-        $results[$customFieldId] = $data['CustomFieldsValues'] ?? [];
+        file_put_contents($cacheFile, json_encode($values));
     }
 
-    // Debug ფაილი
-    file_put_contents(__DIR__ . '/customfield_values_response.json', json_encode($results));
-
     echo json_encode($results);
 } catch (Exception $e) {
     http_response_code(500);
diff --git a/public/userarea/gridRenderer.js b/public/userarea/gridRenderer.js
index 63c2c96..502c21d 100644
--- a/public/userarea/gridRenderer.js
+++ b/public/userarea/gridRenderer.js
@@ -10,7 +10,8 @@
 
     const PAGE_SIZE = 20;
     let revealedCount = PAGE_SIZE;
-    let dropdownOptionsCache = {}; // fieldId -> [{id, text}]
+    let dropdownOptionsCache = {}; // fieldId -> [{id, text}] — used only for small lists
+    const dropdownNameCache = {}; // "fieldId_valueId" -> label
     let clientData = []; // loaded from get_clienti.php
     let fixedFieldCache = window.fixedFieldDataCache || {};
     window.fixedFieldDataCache = fixedFieldCache;
@@ -53,36 +54,75 @@
         data[rowIndex]._dirty = true;
     }
 
-    // ── Client data loading ────────────────────────────────────────────────
+    // ── Client data (AJAX Select2, no bulk loading) ──────────────────────
 
     function formatClientLabel(client) {
-        const nome = client.Nominativo || '';
-        const id = client.IdCliente || '';
-        const code = (client.CodiceCliente || '').toString().trim();
-        const suffix = (code.split('_')[1] || '').trim();
-        const short = suffix || (code ? code.charAt(0) : '--');
-        return `${nome.trim()} - ${short} (ID: ${id})`;
+        return (client.Nominativo || '').trim();
     }
 
+    // Cache of resolved client names: id → name
+    const clientNameCache = {};
+
+    // Build select with only the selected option
     function buildClientOptionsHTML(selectedId) {
         let html = '<option value="">Select a client...</option>';
-        clientData.forEach(c => {
-            const id = c.IdCliente || '';
-            const sel = String(id) === String(selectedId) ? ' selected' : '';
-            html += `<option value="${id}"${sel}>${esc(formatClientLabel(c))}</option>`;
-        });
+        if (selectedId) {
+            const label = clientNameCache[selectedId] || selectedId;
+            html += `<option value="${esc(String(selectedId))}" selected>${esc(String(label))}</option>`;
+        }
         return html;
     }
 
-    async function loadClientData() {
-        if (clientData.length > 0) return;
-        try {
-            const resp = await fetch('get_clienti.php');
-            const json = await resp.json();
-            clientData = json.value || [];
-        } catch (e) {
-            console.error('Failed to load clients:', e);
+    // Pre-resolve all unique client IDs used in data rows, then re-render
+    async function resolveClientNames() {
+        const ids = new Set();
+        data.forEach(row => {
+            if (row.idclient) ids.add(String(row.idclient));
+            if (row.cliente_fornitore_id) ids.add(String(row.cliente_fornitore_id));
+            // Fixed fields that are client-sourced
+            if (row.fixedFields) {
+                for (const [key, val] of Object.entries(row.fixedFields)) {
+                    const cfg = fixedFieldApiConfig[key];
+                    if (cfg && cfg.source === 'clients' && val) ids.add(String(val));
+                }
+            }
+        });
+
+        // Batch resolve via single request per ID
+        const unresolvedIds = [...ids].filter(id => !clientNameCache[id]);
+        if (unresolvedIds.length === 0) return;
+
+        await Promise.all(unresolvedIds.map(async (id) => {
+            try {
+                const resp = await fetch('search_clienti.php?id=' + encodeURIComponent(id));
+                const json = await resp.json();
+                const item = (json.results || [])[0];
+                if (item) clientNameCache[id] = item.text;
+            } catch (e) { /* ignore */ }
+        }));
+    }
+
+    // Select2 AJAX config for client selects
+    const clientSelect2Config = {
+        placeholder: 'Search client...',
+        allowClear: true,
+        width: '100%',
+        minimumInputLength: 0,
+        dropdownCssClass: 'select2-dropdown-smaller',
+        ajax: {
+            url: 'search_clienti.php',
+            dataType: 'json',
+            delay: 150,
+            data: function(params) { return { q: params.term || '', limit: 20 }; },
+            processResults: function(data) { return { results: data.results || [] }; },
+            cache: true
         }
+    };
+
+    async function loadClientData() {
+        // No longer loads all clients — AJAX Select2 handles search
+        // Just resolve names for pre-selected values
+        await resolveClientNames();
     }
 
     // ── Fixed field data loading ───────────────────────────────────────────
@@ -102,13 +142,10 @@
         const config = fixedFieldApiConfig[fieldKey];
         if (!config) return [];
 
-        // Client-sourced fields
+        // Client-sourced fields — handled by AJAX Select2, skip preloading
         if (config.source === 'clients') {
-            await loadClientData();
-            const results = clientData.map(c => ({ id: c.IdCliente, text: formatClientLabel(c) }));
-            results.sort((a, b) => String(a.text).localeCompare(String(b.text), 'it', { sensitivity: 'base' }));
-            fixedFieldCache[fieldKey] = results;
-            return results;
+            fixedFieldCache[fieldKey] = [];
+            return [];
         }
 
         const cacheKey = fieldKey + (clientId ? '_' + clientId : '');
@@ -144,26 +181,23 @@
 
     // ── Custom field dropdown data loading ─────────────────────────────────
 
-    async function loadDropdownOptions(fieldIds) {
-        const missing = fieldIds.filter(id => !dropdownOptionsCache[id]);
-        if (missing.length > 0) {
-            try {
-                const resp = await fetch('get_customfield_values.php?field_ids=' + missing.join(','));
-                const json = await resp.json();
-                // API returns { fieldId: [values] } directly (no success/data wrapper)
-                const entries = json.data ? json.data : json;
-                for (const [fid, values] of Object.entries(entries)) {
-                    if (Array.isArray(values)) {
-                        const sorted = values.sort((a, b) =>
-                            String(a.Valore || '').localeCompare(String(b.Valore || ''), 'it', { sensitivity: 'base' })
-                        );
-                        dropdownOptionsCache[fid] = sorted;
-                    }
-                }
-            } catch (e) {
-                console.error('Failed to load dropdown options:', e);
+
+    // Select2 AJAX config factory for SceltaMultipla
+    function sceltaSelect2Config(fieldId) {
+        return {
+            placeholder: 'Search...',
+            allowClear: true,
+            width: '100%',
+            minimumInputLength: 0,
+            ajax: {
+                url: 'search_customfield_values.php',
+                dataType: 'json',
+                delay: 150,
+                data: function(params) { return { field_id: fieldId, q: params.term || '', limit: 10 }; },
+                processResults: function(data) { return { results: data.results || [] }; },
+                cache: true
             }
-        }
+        };
     }
 
     // ── Preload all data ───────────────────────────────────────────────────
@@ -192,13 +226,26 @@
             }
         }
 
-        // 4. Custom field dropdowns
-        const fieldIds = columns
-            .filter(c => c.type === 'detail' && c.dataType === 'SceltaMultipla' && c.fieldId)
-            .map(c => String(c.fieldId));
-        const uniqueIds = [...new Set(fieldIds)];
-        if (uniqueIds.length > 0) {
-            await loadDropdownOptions(uniqueIds);
+        // 4. Warm server cache + resolve SceltaMultipla names in one request
+        const allFieldIds = [...new Set(
+            columns.filter(c => (c.type === 'detail' || c.type === 'main_field') && c.dataType === 'SceltaMultipla' && c.fieldId)
+                   .map(c => String(c.fieldId))
+        )];
+        if (allFieldIds.length > 0) {
+            try {
+                const resp = await fetch('get_customfield_values.php?field_ids=' + allFieldIds.join(','));
+                const json = await resp.json();
+                const entries = json.data ? json.data : json;
+                for (const [fid, values] of Object.entries(entries)) {
+                    if (Array.isArray(values)) {
+                        values.forEach(v => {
+                            dropdownNameCache[fid + '_' + v.IdCustomFieldsValue] = v.Valore || '';
+                        });
+                    }
+                }
+            } catch (e) {
+                console.error('Failed to preload dropdown data:', e);
+            }
         }
 
         console.log('[gridRenderer] preload done:', {
@@ -308,7 +355,7 @@
 
         if (col.dataType === 'SceltaMultipla') {
             const options = buildDropdownOptionsHTML(col.fieldId, value);
-            return `<select class="cell-input dropdown-select ${cls}${reqCls}" data-field-id="${col.fieldId}"${req}>${options}</select>`;
+            return `<select class="cell-input dropdown-select searchable-dropdown ${cls}${reqCls}" data-field-id="${col.fieldId}"${req}>${options}</select>`;
         }
         if (col.dataType === 'Data') {
             return `<input type="text" class="cell-input date-picker ${cls}${reqCls}" value="${v}"${req}>`;
@@ -329,11 +376,24 @@
             return `<input type="text" class="cell-input date-picker manual-input${reqCls} fixed-input" data-fixed-key="${col.key}" value="${esc(value)}"${req}>`;
         }
 
+        // Client-sourced fields → AJAX Select2 (like idclient)
+        const config = fixedFieldApiConfig[col.key];
+        if (config && config.source === 'clients') {
+            const reqCls = col.isRequired ? ' required-input' : '';
+            const req = col.isRequired ? ' required' : '';
+            let opts = '<option value="">Select...</option>';
+            if (value) {
+                const label = clientNameCache[value] || value;
+                opts += `<option value="${esc(String(value))}" selected>${esc(String(label))}</option>`;
+            }
+            return `<select class="cell-input manual-input fixed-input searchable-client api-fixed-select${reqCls}" data-fixed-key="${col.key}" data-current-value="${esc(value)}"${req}>${opts}</select>`;
+        }
+
         // Select — build from cache
-        const isApiField = !!fixedFieldApiConfig[col.key];
+        const isApiField = !!config;
         const selectClass = isApiField ? 'api-fixed-select' : '';
         let options = '<option value="">Seleziona...</option>';
-        const cacheKey = fixedFieldApiConfig[col.key]?.dependsOn
+        const cacheKey = config?.dependsOn
             ? col.key + '_' + (data[rowIndex].idclient || '')
             : col.key;
         const items = fixedFieldCache[cacheKey] || [];
@@ -349,11 +409,10 @@
 
     function buildDropdownOptionsHTML(fieldId, selectedValue) {
         let html = '<option value="">Seleziona...</option>';
-        const items = dropdownOptionsCache[fieldId] || [];
-        items.forEach(item => {
-            const sel = String(item.IdCustomFieldsValue) === String(selectedValue) ? ' selected' : '';
-            html += `<option value="${item.IdCustomFieldsValue}"${sel}>${esc(item.Valore)}</option>`;
-        });
+        if (selectedValue) {
+            const label = dropdownNameCache[fieldId + '_' + selectedValue] || selectedValue;
+            html += `<option value="${esc(String(selectedValue))}" selected>${esc(String(label))}</option>`;
+        }
         return html;
     }
 
@@ -597,16 +656,16 @@
     }
 
     async function populateTopRowSelects() {
-        // Client selects in top row
+        // Client selects in top row — AJAX mode
         const clientSel = document.getElementById('clientSelect');
         if (clientSel) {
             clientSel.innerHTML = buildClientOptionsHTML(meta.defaultIdclient);
-            $(clientSel).select2({ placeholder: 'Select a client...', allowClear: true, width: '100%', minimumInputLength: 1 });
+            $(clientSel).select2(clientSelect2Config);
         }
         const fornitSel = document.getElementById('clienteFornitoreSelect');
         if (fornitSel) {
             fornitSel.innerHTML = buildClientOptionsHTML('');
-            $(fornitSel).select2({ placeholder: 'Select a supplier...', allowClear: true, width: '100%', minimumInputLength: 1 });
+            $(fornitSel).select2(clientSelect2Config);
         }
 
         // Fixed field selects in top row
@@ -614,6 +673,12 @@
             const fieldKey = sel.dataset.fixedKey;
             const config = fixedFieldApiConfig[fieldKey];
 
+            // Client-sourced → init as AJAX Select2
+            if (config && config.source === 'clients') {
+                $(sel).select2(clientSelect2Config);
+                return;
+            }
+
             if (config && config.dependsOn) {
                 // For dependent fields: merge all cached values across all clientIds
                 const allItems = new Map();
@@ -633,14 +698,10 @@
             }
         });
 
-        // Custom field dropdowns in top row
+        // Custom field dropdowns in top row — AJAX Select2
         topContainer.querySelectorAll('.dropdown-select[data-field-id]').forEach(sel => {
             const fieldId = sel.dataset.fieldId;
-            const items = dropdownOptionsCache[fieldId] || [];
-            sel.innerHTML = '<option value="">Seleziona...</option>';
-            items.forEach(item => {
-                sel.add(new Option(item.Valore, item.IdCustomFieldsValue));
-            });
+            if (fieldId) $(sel).select2(sceltaSelect2Config(fieldId));
         });
 
         // Flatpickr in top row
@@ -700,6 +761,17 @@
             if (!input) return;
             const value = $(input).hasClass('select2-hidden-accessible') ? $(input).val() : input.value;
 
+            // Cache Select2 label so re-render shows name not ID
+            if (value && $(input).hasClass('select2-hidden-accessible')) {
+                const label = $(input).find('option:selected').text();
+                if (label && label !== value) {
+                    clientNameCache[value] = label;
+                    // Also cache for SceltaMultipla
+                    const fieldId = input.dataset?.fieldId;
+                    if (fieldId) dropdownNameCache[fieldId + '_' + value] = label;
+                }
+            }
+
             const col = columns[colIndex] || null;
 
             if (column === 'idclient') {
@@ -730,6 +802,12 @@
             const colType = cell.dataset.colType;
             const value = $(this).val() || '';
 
+            // Cache selected label
+            if (value) {
+                const label = $(this).find('option:selected').text();
+                if (label && label !== value) clientNameCache[value] = label;
+            }
+
             if (colType === 'idclient') {
                 data[rowIndex].idclient = value;
                 data[rowIndex]._dirty = true;
@@ -741,6 +819,16 @@
             updateDirtyIndicator();
         });
 
+        // Cache labels on SceltaMultipla change
+        $(rowContainer).on('change', '.searchable-dropdown', function () {
+            const val = $(this).val();
+            const fieldId = this.dataset.fieldId;
+            if (val && fieldId) {
+                const label = $(this).find('option:selected').text();
+                if (label && label !== val) dropdownNameCache[fieldId + '_' + val] = label;
+            }
+        });
+
         // Select2 change on fixed field selects
         $(rowContainer).on('change', '.api-fixed-select', function () {
             const cell = this.closest('.grid-cell');
@@ -826,18 +914,11 @@
     function initLazySelect2() {
         $(document).on('mouseenter', '.grid-row .grid-cell', function () {
             $(this).find('.searchable-client:not(.select2-hidden-accessible)').each(function () {
-                $(this).select2({
-                    placeholder: 'Select a client...',
-                    allowClear: true,
-                    width: '100%',
-                    dropdownCssClass: 'select2-dropdown-smaller',
-                    minimumInputLength: 1
-                });
+                $(this).select2(clientSelect2Config);
             });
-            $(this).find('select[data-field-id]:not(.select2-hidden-accessible)').each(function () {
-                if ((this.options || []).length > 12) {
-                    $(this).select2({ placeholder: 'Seleziona...', allowClear: true, width: '100%' });
-                }
+            $(this).find('.searchable-dropdown:not(.select2-hidden-accessible)').each(function () {
+                const fieldId = this.dataset.fieldId;
+                if (fieldId) $(this).select2(sceltaSelect2Config(fieldId));
             });
         });
     }
diff --git a/public/userarea/import_insert.php b/public/userarea/import_insert.php
index 8ddd231..1d1561d 100644
--- a/public/userarea/import_insert.php
+++ b/public/userarea/import_insert.php
@@ -47,7 +47,7 @@ $pdo = $db->getConnection();
 $importReferenceCode = date('YmdHis') . '-' . uniqid();
 
 // Recupera tutti i mapping dal template
-$stmt = $pdo->prepare("SELECT id, excel_column, data_type, is_required, manual_default, is_manual, field_label, field_id, main_field FROM template_mapping WHERE template_id = ?");
+$stmt = $pdo->prepare("SELECT id, excel_column, data_type, is_required, manual_default, is_manual, field_label, field_id, main_field, auto_value FROM template_mapping WHERE template_id = ?");
 $stmt->execute([$template_id]);
 $allMappings = $stmt->fetchAll(PDO::FETCH_ASSOC);
 
@@ -135,6 +135,15 @@ foreach ($selected_rows as $rowIndex) {
                 $fieldValue = date('Y-m-d');
             }
         }
+        // Apply auto_value if field is still empty
+        if (($fieldValue === null || $fieldValue === '') && !empty($mapping['auto_value']) && $mapping['auto_value'] !== 'none') {
+            if ($mapping['auto_value'] === 'import_date') {
+                $fieldValue = date('Y-m-d');
+            } elseif ($mapping['auto_value'] === 'import_time') {
+                $fieldValue = date('H:i');
+            }
+        }
+
         if ($mapping['is_required'] && (is_null($fieldValue) || $fieldValue === '')) {
             error_log("Required field missing for mapping ID: " . $mapping['id'] . ", field: " . $mapping['field_label']);
         }
diff --git a/public/userarea/search_clienti.php b/public/userarea/search_clienti.php
new file mode 100644
index 0000000..1d87d91
--- /dev/null
+++ b/public/userarea/search_clienti.php
@@ -0,0 +1,58 @@
+<?php
+require_once dirname(__DIR__, 2) . '/vendor/autoload.php';
+require_once dirname(__FILE__) . '/class/VisualLimsApiClient.class.php';
+
+header('Content-Type: application/json');
+ini_set('display_errors', '0');
+error_reporting(E_ALL);
+
+$q = mb_strtolower(trim($_GET['q'] ?? ''));
+$limit = max(1, min(50, intval($_GET['limit'] ?? 20)));
+$id = isset($_GET['id']) ? intval($_GET['id']) : null;
+
+try {
+    // Load from cache or API
+    $cacheFile = __DIR__ . '/cache/clienti.json';
+    if (file_exists($cacheFile) && (time() - filemtime($cacheFile) < 3600)) {
+        $data = json_decode(file_get_contents($cacheFile), true);
+    } else {
+        $api = VisualLimsApiClient::getInstance();
+        $params = [
+            '$select' => 'IdCliente,Nominativo,CodiceCliente',
+            '$orderby' => 'Nominativo asc'
+        ];
+        $data = $api->get("Cliente?" . http_build_query($params));
+        if (!is_dir(__DIR__ . '/cache')) mkdir(__DIR__ . '/cache', 0777, true);
+        file_put_contents($cacheFile, json_encode($data));
+    }
+
+    $clients = $data['value'] ?? [];
+
+    // If requesting by specific ID (for loading selected value)
+    if ($id !== null) {
+        foreach ($clients as $c) {
+            if ((int)$c['IdCliente'] === $id) {
+                echo json_encode(['results' => [['id' => $c['IdCliente'], 'text' => trim($c['Nominativo'] ?? '')]]]);
+                exit;
+            }
+        }
+        echo json_encode(['results' => []]);
+        exit;
+    }
+
+    // Search by query
+    $results = [];
+    foreach ($clients as $c) {
+        $name = trim($c['Nominativo'] ?? '');
+        $code = trim($c['CodiceCliente'] ?? '');
+        if ($q === '' || mb_strpos(mb_strtolower($name), $q) !== false || mb_strpos(mb_strtolower($code), $q) !== false) {
+            $results[] = ['id' => $c['IdCliente'], 'text' => $name];
+            if (count($results) >= $limit) break;
+        }
+    }
+
+    echo json_encode(['results' => $results]);
+} catch (Exception $e) {
+    http_response_code(500);
+    echo json_encode(['error' => $e->getMessage()]);
+}
diff --git a/public/userarea/search_customfield_values.php b/public/userarea/search_customfield_values.php
new file mode 100644
index 0000000..65fb77e
--- /dev/null
+++ b/public/userarea/search_customfield_values.php
@@ -0,0 +1,62 @@
+<?php
+require_once dirname(__DIR__, 2) . '/vendor/autoload.php';
+require_once dirname(__FILE__) . '/class/VisualLimsApiClient.class.php';
+
+header('Content-Type: application/json');
+ini_set('display_errors', '0');
+error_reporting(E_ALL);
+
+$fieldId = intval($_GET['field_id'] ?? 0);
+$q = mb_strtolower(trim($_GET['q'] ?? ''));
+$id = isset($_GET['id']) ? intval($_GET['id']) : null;
+$limit = max(1, min(50, intval($_GET['limit'] ?? 20)));
+
+if (!$fieldId) {
+    echo json_encode(['results' => []]);
+    exit;
+}
+
+try {
+    $cacheDir = __DIR__ . '/cache';
+    $cacheFile = $cacheDir . '/customfield_' . $fieldId . '.json';
+
+    if (file_exists($cacheFile) && (time() - filemtime($cacheFile) < 3600)) {
+        $values = json_decode(file_get_contents($cacheFile), true);
+    } else {
+        $api = VisualLimsApiClient::getInstance();
+        $data = $api->get("CustomField($fieldId)?\$expand=CustomFieldsValues");
+        $values = $data['CustomFieldsValues'] ?? [];
+        if (!is_dir($cacheDir)) mkdir($cacheDir, 0777, true);
+        file_put_contents($cacheFile, json_encode($values));
+    }
+
+    // Lookup by ID
+    if ($id !== null) {
+        foreach ($values as $v) {
+            if ((int)($v['IdCustomFieldsValue'] ?? 0) === $id) {
+                echo json_encode(['results' => [['id' => $v['IdCustomFieldsValue'], 'text' => $v['Valore'] ?? '']]]);
+                exit;
+            }
+        }
+        echo json_encode(['results' => []]);
+        exit;
+    }
+
+    // Search by query
+    $results = [];
+    foreach ($values as $v) {
+        $text = $v['Valore'] ?? '';
+        if ($q === '' || mb_strpos(mb_strtolower($text), $q) !== false) {
+            $results[] = ['id' => $v['IdCustomFieldsValue'], 'text' => $text];
+            if (count($results) >= $limit) break;
+        }
+    }
+
+    // Sort alphabetically
+    usort($results, fn($a, $b) => strcasecmp($a['text'], $b['text']));
+
+    echo json_encode(['results' => $results]);
+} catch (Exception $e) {
+    http_response_code(500);
+    echo json_encode(['error' => $e->getMessage()]);
+}
diff --git a/public/userarea/tolims.php b/public/userarea/tolims.php
index a803a96..2bd16a0 100644
--- a/public/userarea/tolims.php
+++ b/public/userarea/tolims.php
@@ -1007,6 +1007,48 @@ function resolveFixedValue(string $key, $val, array $fixedLookup): string {
             padding-right: 18px !important;
             appearance: auto;
         }
+        /* Select2 inside filter row */
+        .grid-filter-row .select2-container {
+            width: 100% !important;
+            min-width: 0;
+            flex: 1;
+        }
+        .grid-filter-row .select2-container .select2-selection--single {
+            height: 26px !important;
+            min-height: 26px !important;
+            display: flex !important;
+            align-items: center !important;
+            padding: 0 24px 0 6px;
+            font-size: 11px;
+            border: 1px solid #ced4da;
+            border-radius: 3px;
+            position: relative;
+        }
+        .grid-filter-row .select2-container .select2-selection__rendered {
+            line-height: 1 !important;
+            font-size: 11px;
+            padding: 0 !important;
+            flex: 1;
+            overflow: hidden;
+            text-overflow: ellipsis;
+            white-space: nowrap;
+        }
+        .grid-filter-row .select2-container .select2-selection__arrow {
+            height: 26px !important;
+            position: absolute;
+            right: 2px;
+            top: 0;
+        }
+        .grid-filter-row .filter-wrap {
+            overflow: visible;
+        }
+        /* Hide our clear button when Select2 is active — Select2 has its own allowClear */
+        .filter-wrap:has(.select2-container) .filter-clear-btn {
+            display: none;
+        }
+        .grid-filter-row .grid-cell {
+            overflow: visible !important;
+        }
         .filter-wrap {
             display: flex;
             align-items: center;
@@ -1747,15 +1789,14 @@ function resolveFixedValue(string $key, $val, array $fixedLookup): string {
     </div>
     <?php include('jsinclude.php'); ?>
     <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js"></script>
     <script>
         $(document).ready(function() {
-            // Resolve SceltaMultipla IDs → Valore (cells + filter selects)
+            // Resolve SceltaMultipla IDs → Valore in cells
             (function() {
                 const sceltaEls = document.querySelectorAll('.scelta-value');
-                const sceltaFilters = document.querySelectorAll('select.scelta-filter');
                 const fieldIds = new Set();
                 sceltaEls.forEach(el => { if (el.dataset.fieldId) fieldIds.add(el.dataset.fieldId); });
-                sceltaFilters.forEach(el => { if (el.dataset.fieldId) fieldIds.add(el.dataset.fieldId); });
                 if (!fieldIds.size) return;
 
                 $.getJSON('get_customfield_values.php', { field_ids: [...fieldIds].join(',') }, function(data) {
@@ -1766,7 +1807,6 @@ function resolveFixedValue(string $key, $val, array $fixedLookup): string {
                             lookup[fid][v.IdCustomFieldsValue] = v.Valore;
                         });
                     }
-                    // Resolve cell values
                     sceltaEls.forEach(el => {
                         const fid = el.dataset.fieldId;
                         const raw = (el.textContent || '').trim();
@@ -1774,55 +1814,116 @@ function resolveFixedValue(string $key, $val, array $fixedLookup): string {
                             el.textContent = lookup[fid][raw];
                         }
                     });
-                    // Populate filter selects
-                    sceltaFilters.forEach(sel => {
-                        const fid = sel.dataset.fieldId;
-                        if (!fid || !lookup[fid]) return;
-                        const currentVal = sel.value;
-                        // Sort by Valore
-                        const sorted = Object.entries(lookup[fid]).sort((a, b) => a[1].localeCompare(b[1]));
-                        sel.innerHTML = '<option value="">All</option>';
-                        sorted.forEach(([id, label]) => {
-                            const opt = document.createElement('option');
-                            opt.value = id;
-                            opt.textContent = label;
-                            if (id === currentVal) opt.selected = true;
-                            sel.appendChild(opt);
-                        });
-                    });
                 });
             })();
 
-            // Load client names → resolve cells + populate filter selects
-            $.getJSON('get_clienti.php', function(data) {
-                const clients = data.value || [];
-                const map = {};
-                const sorted = [];
-                clients.forEach(c => {
-                    const name = (c.Nominativo || '').trim();
-                    map[c.IdCliente] = name;
-                    sorted.push({ id: c.IdCliente, name: name });
+            // SceltaMultipla filter selects → AJAX Select2
+            document.querySelectorAll('select.scelta-filter').forEach(sel => {
+                const fieldId = sel.dataset.fieldId;
+                if (!fieldId) return;
+                const currentVal = sel.value;
+                if (currentVal) {
+                    fetch('search_customfield_values.php?field_id=' + fieldId + '&id=' + encodeURIComponent(currentVal))
+                        .then(r => r.json())
+                        .then(json => {
+                            const item = (json.results || [])[0];
+                            if (item) sel.innerHTML = '<option value="">All</option><option value="' + item.id + '" selected>' + item.text + '</option>';
+                        })
+                        .catch(() => {});
+                }
+                $(sel).select2({
+                    placeholder: 'All',
+                    allowClear: true,
+                    width: '100%',
+                    minimumInputLength: 0,
+                    ajax: {
+                        url: 'search_customfield_values.php',
+                        dataType: 'json',
+                        delay: 150,
+                        data: function(params) { return { field_id: fieldId, q: params.term || '', limit: 20 }; },
+                        processResults: function(data) { return { results: data.results || [] }; },
+                        cache: true
+                    }
                 });
-                sorted.sort((a, b) => a.name.localeCompare(b.name));
+            });
 
-                // Resolve cell values
+            // SceltaMultipla filter → submit on change
+            $(document).on('change', 'select.scelta-filter', function() {
+                submitFilters();
+            });
+
+            // Resolve client names by unique IDs (lightweight)
+            (function() {
+                const ids = new Set();
                 document.querySelectorAll('.client-text').forEach(el => {
                     const id = el.getAttribute('data-client-id');
-                    if (id && map[id]) el.textContent = map[id];
+                    if (id) ids.add(id);
                 });
+                if (!ids.size) return;
 
-                // Populate client filter selects
-                document.querySelectorAll('select.client-filter').forEach(sel => {
-                    const currentVal = sel.value;
-                    sel.innerHTML = '<option value="">All</option>';
-                    sorted.forEach(c => {
-                        const opt = document.createElement('option');
-                        opt.value = c.id;
-                        opt.textContent = c.name;
-                        if (String(c.id) === currentVal) opt.selected = true;
-                        sel.appendChild(opt);
+                const promises = [...ids].map(id =>
+                    fetch('search_clienti.php?id=' + encodeURIComponent(id))
+                        .then(r => r.json())
+                        .then(json => {
+                            const item = (json.results || [])[0];
+                            if (item) {
+                                document.querySelectorAll(`.client-text[data-client-id="${id}"]`).forEach(el => {
+                                    el.textContent = item.text;
+                                });
+                            }
+                        })
+                        .catch(() => {})
+                );
+                Promise.all(promises);
+            })();
+
+            // Client filter selects → AJAX Select2
+            document.querySelectorAll('select.client-filter').forEach(sel => {
+                const currentVal = sel.value;
+                if (currentVal) {
+                    fetch('search_clienti.php?id=' + encodeURIComponent(currentVal))
+                        .then(r => r.json())
+                        .then(json => {
+                            const item = (json.results || [])[0];
+                            if (item) {
+                                sel.innerHTML = '<option value="">All</option><option value="' + item.id + '" selected>' + item.text + '</option>';
+                            }
+                            $(sel).select2({
+                                placeholder: 'All',
+                                allowClear: true,
+                                width: '100%',
+                                minimumInputLength: 0,
+                                ajax: {
+                                    url: 'search_clienti.php',
+                                    dataType: 'json',
+                                    delay: 150,
+                                    data: function(params) { return { q: params.term || '', limit: 20 }; },
+                                    processResults: function(data) { return { results: data.results || [] }; },
+                                    cache: true
+                                }
+                            });
+                        });
+                } else {
+                    $(sel).select2({
+                        placeholder: 'All',
+                        allowClear: true,
+                        width: '100%',
+                        minimumInputLength: 0,
+                        ajax: {
+                            url: 'search_clienti.php',
+                            dataType: 'json',
+                            delay: 150,
+                            data: function(params) { return { q: params.term || '', limit: 20 }; },
+                            processResults: function(data) { return { results: data.results || [] }; },
+                            cache: true
+                        }
                     });
-                });
+                }
+            });
+
+            // Client filter select2 → submit on change
+            $(document).on('change', 'select.client-filter', function() {
+                submitFilters();
             });
 
             // Modal close handlers
diff --git a/public/userarea/warm_cache.php b/public/userarea/warm_cache.php
new file mode 100644
index 0000000..3248124
--- /dev/null
+++ b/public/userarea/warm_cache.php
@@ -0,0 +1,110 @@
+<?php
+// Cache warm-up script.
+// Run via CLI:   php warm_cache.php
+// Run via cron:  every 30 min: php /path/to/warm_cache.php
+// Run via HTTP:  http://localhost:8000/public/userarea/warm_cache.php (requires auth)
+
+$startTime = microtime(true);
+$isCli = (php_sapi_name() === 'cli');
+
+if (!$isCli) {
+    // When called via HTTP, require auth
+    include('include/headscript.php');
+    if (!Auth::check()) {
+        http_response_code(403);
+        echo json_encode(['error' => 'Unauthorized']);
+        exit;
+    }
+    header('Content-Type: application/json');
+}
+
+require_once dirname(__DIR__, 2) . '/vendor/autoload.php';
+require_once __DIR__ . '/class/VisualLimsApiClient.class.php';
+require_once __DIR__ . '/class/db-functions.php';
+
+$cacheDir = __DIR__ . '/cache';
+if (!is_dir($cacheDir)) mkdir($cacheDir, 0777, true);
+
+$log = [];
+function warmLog(string $msg, bool $isCli) {
+    global $log;
+    $line = date('H:i:s') . " $msg";
+    $log[] = $line;
+    if ($isCli) echo $line . PHP_EOL;
+}
+
+try {
+    $api = VisualLimsApiClient::getInstance();
+    $pdo = DBHandlerSelect::getInstance()->getConnection();
+
+    // 1. Clients
+    warmLog('[clients] Fetching...', $isCli);
+    $params = ['$select' => 'IdCliente,Nominativo,CodiceCliente', '$orderby' => 'Nominativo asc'];
+    $clientData = $api->get("Cliente?" . http_build_query($params));
+    file_put_contents($cacheDir . '/clienti.json', json_encode($clientData));
+    $clientCount = count($clientData['value'] ?? []);
+    warmLog("[clients] Cached $clientCount clients", $isCli);
+
+    // 2. Fixed fields: MoltiplicatorePrezzo, AnagraficaCertestObject, AnagraficaCertestService
+    $fixedFields = [
+        'MoltiplicatorePrezzo' => ['endpoint' => 'MoltiplicatorePrezzi', 'file' => 'moltiplicatori_prezzo.json'],
+        'AnagraficaCertestObject' => ['endpoint' => 'AnagraficaCertestObject', 'file' => 'anagrafica_certest_object.json'],
+        'AnagraficaCertestService' => ['endpoint' => 'AnagraficaCertestService', 'file' => 'anagrafica_certest_service.json'],
+    ];
+
+    foreach ($fixedFields as $name => $cfg) {
+        warmLog("[$name] Fetching...", $isCli);
+        $data = $api->get($cfg['endpoint']);
+        file_put_contents($cacheDir . '/' . $cfg['file'], json_encode($data, JSON_PRETTY_PRINT));
+        $count = count($data['value'] ?? $data ?? []);
+        warmLog("[$name] Cached $count items", $isCli);
+    }
+
+    // 3. ClienteResponsabile — for each unique client in datadb
+    $stmt = $pdo->query("SELECT DISTINCT idclient FROM datadb WHERE idclient IS NOT NULL AND idclient > 0 ORDER BY idclient ASC");
+    $clientIds = $stmt->fetchAll(PDO::FETCH_COLUMN);
+    warmLog("[ClienteResponsabile] Fetching for " . count($clientIds) . " clients...", $isCli);
+
+    foreach ($clientIds as $cid) {
+        $cid = (int)$cid;
+        $endpoint = "Cliente($cid)?\$expand=Responsabili";
+        $cacheFile = $cacheDir . '/cliente_responsabili_' . $cid . '.json';
+        try {
+            $data = $api->get($endpoint);
+            file_put_contents($cacheFile, json_encode($data, JSON_PRETTY_PRINT));
+            $count = count($data['Responsabili'] ?? []);
+            warmLog("[ClienteResponsabile] Client $cid: $count responsabili", $isCli);
+        } catch (Exception $e) {
+            warmLog("[ClienteResponsabile] Client $cid: ERROR " . $e->getMessage(), $isCli);
+        }
+    }
+
+    // 4. CustomField values — all SceltaMultipla field_ids from template_mapping
+    $stmt = $pdo->query("SELECT DISTINCT field_id FROM template_mapping WHERE data_type = 'SceltaMultipla' AND is_visible_import = 1 AND field_id IS NOT NULL ORDER BY field_id");
+    $fieldIds = $stmt->fetchAll(PDO::FETCH_COLUMN);
+    warmLog("[CustomFields] Fetching " . count($fieldIds) . " fields...", $isCli);
+
+    foreach ($fieldIds as $fid) {
+        $fid = (int)$fid;
+        $cacheFile = $cacheDir . '/customfield_' . $fid . '.json';
+        try {
+            $endpoint = "CustomField($fid)?\$expand=CustomFieldsValues";
+            $data = $api->get($endpoint);
+            $values = $data['CustomFieldsValues'] ?? [];
+            file_put_contents($cacheFile, json_encode($values));
+            warmLog("[CustomField $fid] Cached " . count($values) . " values", $isCli);
+        } catch (Exception $e) {
+            warmLog("[CustomField $fid] ERROR " . $e->getMessage(), $isCli);
+        }
+    }
+
+    $elapsed = round(microtime(true) - $startTime, 1);
+    warmLog("Done in {$elapsed}s", $isCli);
+
+} catch (Exception $e) {
+    warmLog("FATAL: " . $e->getMessage(), $isCli);
+}
+
+if (!$isCli) {
+    echo json_encode(['success' => true, 'log' => $log]);
+}