30fps average is unplayable for me
And I just don't understand the obsession with antialiasing either. Why the hell would you be running 4x AA at 1600x1200 if you're only getting 30fps average?
I don't even run AA in multiplayer games when I'm getting 85 fps constant because it gives extremely inconsistent performance when there are scenes with lots of explosions, smoke, or transparent effects. I really rarely use any AA at all, which is why I play most games at 1600x1200 or 2048x1536 at 60+fps constant.
Turn off the freaking AA in Crysis and it'll run significantly better.