All my PC games are choppy?

Firehawk9000

Honorable
Aug 17, 2013
2
0
10,510
So my hardware:
Intel core i7 3770k (OC @4.2 ghz)
Asus DCU2 GTX 670
8GB GSkill Ripjaw series RAM (1600)
Most of my other hardware doesn't really matter. I have enough wattage on the psu, plenty of room in my hdd (1TB) and I've got about 7 fans in my tower. Not to mention a Zalman 9900 MAX CPU heatsink/fan.

Some games that are running choppy are...Assassin's Creed Brotherhood (90% of the time the game is glitching, like the Character models will just spaz out during cutscenes and such), Mirrors Edge, Portal 2, Bioshock (it won't even run right even though I've reinstalled it multiple times). There are other games I'm sure but I haven't tried my entire steam library yet. Some games run perfectly fine like Planetside 2, Assassin's Creed IV, and Borderlands 2.

I'm running all these games on max settings (or at least what Geforce Experience recommends). I've fiddled around with Vsync and stuff but something just doesn't seem right. Thanks for your help!