Re: Windows* 7/8/8.1 Driver (32 & 64 bit) Version 3345

ConfusedBiney, go back to page 17 and find my post at the top. There's a link on how to set your graphics cards to performance instead of quality. I'm not sure what other graphics cards you have, but you may find it useful.

I had the exact same issue, and 3345 would not remain installed. Games would crash, and I'd get high memory usage. Setting things to performance has stopped the crashes, though I still get an occasional memory warning.