System is as in the signature with 680's at stock clock speeds. Settings:
DX11
Ultra quality
AA 8x
1920x1200
Score = 3076
I notice quite a lot of microstutter in the benchmark, not as bad as it was on heaven but still noticeably problematic. Fraps frame time trace and an absolute frame time difference are shown below. If this was a game I would call it unplayable, not because the frame rate is poor but because the stutter is really quite bad.
Frame time trace
Absolute difference between frame times sorted
Turning vsync on doesn't help much in some scenes but in others the microstutter becomes unnoticeable. It does drop the score to 2556. Ideally the orange below should never go above 5ms or so, anything above that and I detect it quite easily. As the trace shows even with vsync on just like with vsync off above the benchmark goes above that threshold not just with momentary jitters (which there are a lot of) but also often enough to cause stuttering motion.