diff --git a/addons/web/models/models.py b/addons/web/models/models.py
index 7a55026eb05..702f8824895 100644
--- a/addons/web/models/models.py
+++ b/addons/web/models/models.py
@@ -10,6 +10,8 @@ from odoo.tools import lazy
 from odoo.tools.misc import get_lang
 from odoo.exceptions import UserError
 
+SEARCH_PANEL_LIMIT = 200
+
 
 class IrActionsActWindowView(models.Model):
     _inherit = 'ir.actions.act_window.view'
@@ -240,7 +242,7 @@ class Base(models.AbstractModel):
             fields.append(parent_name)
         return {
             'parent_field': parent_name,
-            'values': Comodel.with_context(hierarchical_naming=False).search_read([], fields),
+            'values': Comodel.with_context(hierarchical_naming=False).search_read([], fields, limit=SEARCH_PANEL_LIMIT),
         }
 
     @api.model
@@ -315,7 +317,7 @@ class Base(models.AbstractModel):
                 }
             # retrieve all possible values, and return them with their label and counter
             field_names = ['display_name', group_by] if group_by else ['display_name']
-            records = Comodel.search_read(comodel_domain, field_names)
+            records = Comodel.search_read(comodel_domain, field_names, limit=SEARCH_PANEL_LIMIT)
             for record in records:
                 record_id = record['id']
                 values = {
@@ -330,7 +332,7 @@ class Base(models.AbstractModel):
         elif field.type == 'many2many':
             # retrieve all possible values, and return them with their label and counter
             field_names = ['display_name', group_by] if group_by else ['display_name']
-            records = Comodel.search_read(comodel_domain, field_names)
+            records = Comodel.search_read(comodel_domain, field_names, limit=SEARCH_PANEL_LIMIT)
             for record in records:
                 record_id = record['id']
                 values = {
diff --git a/addons/web/static/src/js/views/search_panel.js b/addons/web/static/src/js/views/search_panel.js
index 377eb723621..6a1d8381fb7 100644
--- a/addons/web/static/src/js/views/search_panel.js
+++ b/addons/web/static/src/js/views/search_panel.js
@@ -19,6 +19,8 @@ var qweb = core.qweb;
 // in the arch)
 var defaultViewTypes = ['kanban', 'tree'];
 
+const SEARCH_PANEL_LIMIT = 200;
+
 /**
  * Given a <searchpanel> arch node, iterate over its children to generate the
  * description of each section (being either a category or a filter).
@@ -279,7 +281,15 @@ var SearchPanel = Widget.extend({
      */
     _createCategoryTree: function (categoryId, values) {
         var category = this.categories[categoryId];
-        var parentField = category.parentField;
+
+        let parentField = category.parentField;
+        if (values.length === SEARCH_PANEL_LIMIT) {
+            category.limitAttained = true;
+            if (parentField) {
+                // we do not hierarchize values
+                parentField = false;
+            }
+        }
 
         category.values = {};
         _.each(values, function (value) {
@@ -324,6 +334,10 @@ var SearchPanel = Widget.extend({
     _createFilterTree: function (filterId, values) {
         var filter = this.filters[filterId];
 
+        if (values.length === SEARCH_PANEL_LIMIT) {
+            filter.limitAttained = true;
+        }
+
         // restore checked property
         values.forEach(function (value) {
             var oldValue = filter.values && filter.values[value.id];
diff --git a/addons/web/static/src/xml/kanban.xml b/addons/web/static/src/xml/kanban.xml
index 48d95dd00b3..e4ef2393e3f 100644
--- a/addons/web/static/src/xml/kanban.xml
+++ b/addons/web/static/src/xml/kanban.xml
@@ -236,6 +236,10 @@
                 <t t-set="values" t-value="category.rootIds"/>
             </t>
         </ul>
+        <div t-if="category.limitAttained" class="alert alert-warning">
+            <span>For performance reasons, only 200 values were fetched. Some values might be missing.</span>
+            <span t-if="category.parentField">The values have not been hierarchized.</span>
+        </div>
     </section>
 </t>
 <t t-name="SearchPanel.CategoryValues">
@@ -271,6 +275,9 @@
                 <t t-set="values" t-value="filter.values"/>
             </t>
         </ul>
+        <div t-if="filter.limitAttained" class="alert alert-warning">
+            <span>For performance reasons, only 200 values were fetched. Some values might be missing.</span>
+        </div>
     </section>
 </t>
 <t t-name="SearchPanel.FilterGroups">