Do you mind trying RadeonPro to force v-sync, triple buffering or, even better, force limit your framerate to your average fps that you get in-game ?
You may have to create a game profile for each game, but if you get it right, you won't regret it.
Just a suggestion that works for me as well.
EDIT: "Keep crossfire disabled or lower in-game settings."
yes, that was not helpful at all wasn't it now ?
gigabyte X58A-UD3R rev.2, core i7 975 3.9ghz (stock voltage), windows 8.1 64-bit, corsair 12gb DDR3 1600mhz 7-7-7-20 RAM, xfx HD 5970 + gigabyte HD 5970 (stock clocks), coolermaster ultimate 900w PSU.
amd catalyst 14.7 RC3 aug12
06:58 PM by