diff --git a/addons/web/static/src/legacy/js/views/basic/basic_model.js b/addons/web/static/src/legacy/js/views/basic/basic_model.js
index 9187e6a965d..91e89c9f30f 100644
--- a/addons/web/static/src/legacy/js/views/basic/basic_model.js
+++ b/addons/web/static/src/legacy/js/views/basic/basic_model.js
@@ -5211,6 +5211,7 @@ var BasicModel = AbstractModel.extend({
         var fieldsInfo = view ? view.fieldsInfo : fieldInfo.fieldsInfo;
         var fields = view ? view.fields : fieldInfo.relatedFields;
         var viewType = view ? view.type : fieldInfo.viewType;
+        var id2Values = new Map(values.map((value) => [value.id, value]))
 
         _.each(records, function (record) {
             var x2mList = self.localData[record.data[fieldName]];
@@ -5218,7 +5219,7 @@ var BasicModel = AbstractModel.extend({
             _.each(x2mList.res_ids, function (res_id) {
                 var dataPoint = self._makeDataPoint({
                     modelName: field.relation,
-                    data: _.findWhere(values, {id: res_id}),
+                    data: id2Values.get(res_id),
                     fields: fields,
                     fieldsInfo: fieldsInfo,
                     parentID: x2mList.id,