Not sure who 'ubersampling' is intended for... Either 640x480 gamers running 580SLI or some strange race with technology far beyond ours
I can max the game out at 2560x1600 with everything turned as high as it goes, but, ubersampling. I get about 40-70 outdoors and 100+ indoors. My FPS grinds down to 10-20fps with ubersampling turned on, useless feature at this point. If it runs on my rig that poorly, it's not going to run on anyone's rig at a playable framerate. My impression is that it is some sort of supersampling type AA, but it doesn't look like SSAA when enabled, so I'm not really sure what it is beyond an FPS killer.
SLI scaling is piss poor and showing low GPU usage, maybe if that gets fixed it will be somewhat playable with ubersampling on.
Game does look awesome though and never mind the graphics, the gameplay is amazing.