Hey guys, so I've been trying to overclock my XFX GTX 260 to get better performance in games, but it seems that no matter mow much or how little I overclock, my FPS gets cut in half. Games like Oblivion and Fallout 3 normally run at 60-70fps, but after an overclock, they run at 30-35fps. Even if I go back to default clocks, my games still run at this speed. I have to reboot to gain my performance back. This makes me think that it is a driver issue, but I am running the latest driver for my card. I use RivaTuner to overclock, but at first I was using MSI Afterburner. I stopped using AB because there was no slider to adjust shader clock speeds, but I still use it for the on-screen display server. If anyone can help me overclock successfully, that would be much appreciated.