r_drawnearfov 2 - to hide weapon
hud_hide 1 - to hide HUD
cl_fov XX - to quickly change FoV
FOV is vertical, obviously. To avoid fisheye, I've been sticking to 60.
I'm downsampling from 3840x2160 and using in-game FXAA3.11. These days, AA is such a mess. Downsampling is a God Send.
I don't know much about ATI hardware but... those seem like top-of-the-line cards. You should be able to handle this game @ 2160p easily?
Edited by jim2point0 - 2/8/13 at 10:52am