Horrible hangs/freezes

[zumakalus]

I have read lots of forums and tried a few fixes for the issue im having, but nothing has worked yet. I played this game perfectly fine for about 2 hours with no issues, but when I came home from work and loaded my save file the game runs terrible now. Constant hangs and freezes for a split second that totally ruin the game. System specs are:

I7 3770k 4.3ghz
SLI GTX 680s
32gb memory
Asus z77 mobo
windows 7
game installed on ssd

I just dont get why the game worked perfect and now it runs like ass, never expected that or had that happen. Any help would be appreciated cause I have really enjoyed the game thus far and want to see it through.