blah blah, you said that before ;-) It's hard to tell with 3D games anyway. But it might not be me on the wrong track but something in the way BlitzMax handles it's threads or graphics drawing or something. Anyway, the guy who had stutters said they went away when he tried my priority boost test. But yeah, maybe I'm suppose to do it all as wait even/MaxGUI etc instead and that will solve it. However, it's not going to solve it for games where VSync is 0 and they try to render as fast as possible is it?