Index: src/Deltares.DSoilModel.Forms/DSoilModelPlugin.cs
===================================================================
diff -u -r222 -r226
--- src/Deltares.DSoilModel.Forms/DSoilModelPlugin.cs	(.../DSoilModelPlugin.cs)	(revision 222)
+++ src/Deltares.DSoilModel.Forms/DSoilModelPlugin.cs	(.../DSoilModelPlugin.cs)	(revision 226)
@@ -313,6 +313,11 @@
                 GeometryEditor.Project = project;
                 SegmentGeometryEditor.Project = project;
                 RealTimeBackgroundValidator.Instance.Register(project);
+                if (!DSoilModelProject.IsAutoValidationEnabled)
+                {
+                    RealTimeBackgroundValidator.Instance.Stop();
+                }
+
                 // Set correct active table.
                 if (project.Soils.Soils.Count == 0 && project.CPTs.Count > 0)
                 {
@@ -483,7 +488,10 @@
                 if (UndoRedoManager.UseManager == false)
                 {
                     // note: as the UndoRedoManager is not sending EndAction events the validator can respond to, start it here (see DSB-473)
-                    RealTimeBackgroundValidator.Instance.Start();
+                    if (DSoilModelProject.IsAutoValidationEnabled)
+                    {
+                        RealTimeBackgroundValidator.Instance.Start();
+                    }
                 }
             }