A few days ago, I decided that I wanted to Replay Witcher 2 before Witcher 3 comes out, so I got GOG Galaxy, installed Witcher 2, and played for about 5 hours. I opened my game up today, and after about 1 minute of playing, the game freezes. It doesn't CTD, or throw any errors, it just freezes, and will stay frozen for however long I leave it. I've tried starting a new game, reinstalling, verifying, and that problem persists.

Anyone had this problem or found a solution?

EDIT:

Specs:
Windows 8.1 x64
I7-5820K
2xSLI GTX970
16GB DDR4-2800

EDIT 2:

Think I fixed the problem. Unless I changed something else and that fixed it, in which case I have no idea. I think the problem was with the overclocking on my GPUs, as well as the EVGA Precision X software. Once I reset the clocks to default and then quit Precision, the game stopped freezing.