I'm using a GTX 670 with good old 314.22, win7 64. Sometimes i can play for hours without any problems and sometimes i have a lot of random crashes. When it happens my screen turns black as the graphics driver crashes and it turns back on with 15 fps. I tab out to click OK on the nvidia crash window - it then recovers and i can tab back in and continue playing. As annoying as it is at least i dont get BSOD with this driver.