I'm having serious issues in FC4.
I've done the stuttering fixes, Matt suggested. I have found that with the official farcry 4 crossfire profile, gpu usage fluctuates massively between 50% and 95% on both cards. As a result, the frame rate is barely more than with crossfire disabled.
I have also tried the AFR profile, and it gives better performance, but massive flickering everywhere. The 1x1 profile seems about the same as the official profile.
I have tried a variety of in-game settings (setting everything at Ultra, Very High, and high) and see the same effects (obviously frame rate is higher with lower settings, but the very erratic and much lower than it should be.
Here's a couple of screenshots of the afterburner graph taken immediately after shutting far cry down, to show the effect.
Any ideas how to fix this?
It occurs whether I'm running in eyefinity resolution or 1920x1200.