All my screenshots are on the Mainstream setting with no AA/AF. There is still Gamer/Enthusiast settings to choose from.
Minimum
Mainstream
Gamer
Enthusiast
I played mine on mainstream as I don't really care about the graphics. If my system can play the game, I'm happy.
Ah okay.
Guess you're the opposite of me

I remember me being stubborn and pushing my 6800gs to the limit by playing Bioshock and GoW @ high with a whopping framrate of 20-25 fps
