Yeah, I have a 2600K, 16GB DDR3 and a 2.5GB 570; the game not recognizing it makes sense. Even older 3DMarks think I have 32MB on my 570, heh.
The part about the frame rate being tied to game speed makes sense. I guess it slows the game by slowing the frame rate. 30fps is fine, but I was just wondering about it. Thanks for the replies!