I never have driver crashes whether running in FS Crossfire or Windowed, the game occasionally does crash but it's not gfx related, it's the stupid elevator glitches, only place I ever crash.

The lack of support for multiple processors is more an issue w/ CPUs than it is GPUs, I get better performance when I lock the game on 2 cores than when I let it run across all 8. Assuming they fix that and truly support core-scaling in CPUs my game will probably continue to perform better in windowed(w/ shiftwindow for pseudo-FS) mode than in FS even if they get AMD GPU support right.

There's plenty of games out now that use PhysX that on AMD GPUs still easily clear 120FPS with settings at full, sure you lose a little of the GPU specific optimization but even w/o it you shouldn't be running @30 FPS, this is the only game I own currently that I can't max and still break 100FPS ; ;

Someday