I've been messing around with the AA over the weekend and found that 2xAA + low FXAA looks and runs the best for me.
FXAA on high just take away the crispness/sharpness of the image...don't get me wrong its a great feature but having it on high makes some objects in the image blurry.
I think a combanation of both with FXAA on medium to low is the best way to go...so post your AA settings, I'm interested to see what you guys think.
FXAA..trees look blurry.
Normal 4xAA big performance hit