you might just help me, i'm having a similar problem, but much more extreme. my game wouldnt boot at all, so i'm ma roll back the driver and see what happen.
I actually did find out what was causing my crashes. I've a 780i SLI Evga motherboard. I updated the BIOS and the sound drivers with the ones from evgas website, then used the very latest drivers. The problems were completely gone.
I'm not sure which was the culprit, though I'd bet money on the BIOS. I'd make sure the firmware on your BIOS is fully updated. Something in the video card driver just didn't like it.