GooEngine: Option to disable Material Icon rendering

scripts/startup/bl_ui/space_userpref.py

@@ -2600,6 +2600,7 @@ class USERPREF_PT_experimental_debugging(ExperimentalPanel, Panel):
                 ({"property": "use_asset_indexing"}, None),
                 ({"property": "use_viewport_debug"}, None),
                 ({"property": "use_eevee_debug"}, None),
+                ({"property": "disable_material_icon"}, None),
             ),
         )
 

source/blender/editors/interface/interface_icons.cc

@@ -1445,6 +1445,11 @@ static void icon_set_image(const bContext *C,
                            enum eIconSizes size,
                            const bool use_job)
 {
+  if (U.experimental.disable_material_icon && GS(id->name) == ID_MA) {
+    return;
+  }
+
+
   if (!prv_img) {
     if (G.debug & G_DEBUG) {
       printf("%s: no preview image for this ID: %s\n", __func__, id->name);

source/blender/makesdna/DNA_userdef_types.h

@@ -696,6 +696,7 @@ typedef struct UserDef_Experimental {
   char no_asset_indexing;
   char use_viewport_debug;
   char use_all_linked_data_direct;
+  char disable_material_icon;
   char SANITIZE_AFTER_HERE;
   /* The following options are automatically sanitized (set to 0)
    * when the release cycle is not alpha. */
@@ -712,7 +713,7 @@ typedef struct UserDef_Experimental {
   char use_shader_node_previews;
   char use_extension_repos;
 
-  char _pad[3];
+  char _pad[1];
   /** `makesdna` does not allow empty structs. */
 } UserDef_Experimental;
 

source/blender/makesrna/intern/rna_userdef.cc

@@ -7018,6 +7018,15 @@ static void rna_def_userdef_experimental(BlenderRNA *brna)
       "reduces execution time and memory usage)");
   RNA_def_property_update(prop, 0, "rna_userdef_update");
 
+  prop = RNA_def_property(srna, "disable_material_icon", PROP_BOOLEAN, PROP_NONE);
+  RNA_def_property_boolean_sdna(prop, NULL, "disable_material_icon", 1);
+  RNA_def_property_ui_text(
+      prop,
+      "Disable Material Icon Rendering",
+      "If true, Material Preview Icons will NOT be rendered. "
+      "This can prevent stuttering from opening the material ID menu");
+
+
   prop = RNA_def_property(srna, "use_new_curves_tools", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, nullptr, "use_new_curves_tools", 1);
   RNA_def_property_ui_text(