just built a new system with a gtx 460 and a corsair psu and everything was fine the first few days, now during black ops my fps will drop to about 6fps for around 5-10 seconds then return to normal. i have evga precision and when i look at the graphs my gpu usage drops along with the fps. my temp stays below 50C so its not an overheating issue. is this a driver issue or what's going on?