My brother's having problems with COD4. His FPS is nowhere near where it should be, and it constantly drops and gets choppy. The FPS stays the same whether its on low or maxed graphics. He just reformatted, clean install of everything and he's still having trouble with it. His specs are as follows: Gigabyte DS4 EVGA 8800GT Superclocked E6600 2gigs of ram. I looked around, everything is clocked right. I don't know what to do. I have the same exact computer as him minus the processor. I have an E6750. I get a constant 91fps capped on Extra graphics. Any Suggestions?