You running SLI? Try on one GPU and let me know if you got some extra time. Mine dips below 25 fps quite a bit. Flashlight on or off. With the 260, I was getting a steady 50-60 FPS. You running the quadro drivers as well? Get BOSD with those and am running Tesla right now. Also, in some games (including L4D2), it will hang for a bit, sometimes 10 seconds, and then resume.