I just bought a Sapphire 9800 pro 128MB about a week and a half ago. Since then I have installed the latest ATI Catalyst drivers and am using redline to OC. I have almost no artifacts maybe 1 or 2. When I play a certain game like THUG 2(Tony Hawks Underground 2) its all choppy at medium quality and all the graphics cards enhancements are turned to performance instead of quality. Should I change to using ATI Tool or some other OCer to figure out performance settings, because I'm really not pushing it too hard at stock cooling at 378/351MHz and I know so. What Should I Do?