Add a tooltip to document performance issues of the Remote scene tree

(cherry picked from commit 6d2f5ee244cf6c16e36debab98e835a4cfc4549c)

editor/scene_tree_dock.cpp

@@ -3149,6 +3149,7 @@ SceneTreeDock::SceneTreeDock(EditorNode *p_editor, Node *p_scene_root, EditorSel
 	edit_remote->set_h_size_flags(SIZE_EXPAND_FILL);
 	edit_remote->set_text(TTR("Remote"));
 	edit_remote->set_toggle_mode(true);
+	edit_remote->set_tooltip(TTR("If selected, the Remote scene tree dock will cause the project to stutter every time it updates.\nSwitch back to the Local scene tree dock to improve performance."));
 	edit_remote->connect("pressed", this, "_remote_tree_selected");
 
 	edit_local = memnew(ToolButton);