i tried to make a gui counter with one button start/pause, but when it starts, it looks refresh quickly, and cpu usage is not low, how can i make it better ? thanks! #include <GUIConstantsEx.au3> $gui = GUICreate("Test", 333, 333) $btn01=GUICtrlCreateButton("START",15,15) GUISetFont(222 ) $lbl01 = GUICtrlCreateLabel("", 45, 53, 300, 300) GUISetState() Global $cnt=0, $swh=0 While 1 Switch GUIGetMsg() Case $GUI_EVENT_CLOSE Exit Case $btn01 $cnt +=1 $swh