AMD Working on Drivers to Fix Micro-Stutter in CrossFire
AMD has tweeted that it is working on drivers that should fix the micro-stutter problems experienced on systems with multi-GPU setups.
AMD announced through its Radeon Twitter feed that it is working on better drivers that will improve CrossFire performance, with particular attention to frame latency issues. AMD calls this frame pacing. Supposedly, the driver will be available on or around July 31, 2013.
While this driver release might not be that exciting to single-GPU users, it is something over which users with multi-GPU setups should get passionately excited. The reason for this is that over the last couple of years, problems with frame latency in AMD Radeon CrossFire systems have gotten increasingly apparent and have been quite bothersome.
The problem in question doesn't have a scientific name, though the term "Micro-Stutter" is widely accepted. The problem is that while a multi-GPU system may pump out, say 40 FPS in a particular game, the frames do not come out with consistent timing between each other, thus appearing as if a much lower frame rate is being produced. Many benchmarking procedures now include frame latency testing, sometimes putting as much, if not more, emphasis on the topic of frame latency as actual FPS performance.

BTW the comment up/down votes do not work AT ALL now
Actually I think they do have MS to some extent even on a single dual-gpu card.
Why not? Dual gpu still work exactly two separate cards in sli or cf. Also this fix most likely for 7k users. So non 7k users don't put too high expectation the fix will include their card
Why not? Dual gpu still work exactly two separate cards in sli or cf. Also this fix most likely for 7k users. So non 7k users don't put too high expectation the fix will include their card
They stated on twitter that it applies to that card. Also lol the replies on that twitter post.
wrong, dual gpu cards do experience micro-stutter exactly the same as 2 separate cards do. So in the case of the 6990, yes it does have micro-stutter. As a former 6850 crossfire user i'm so glad i sold them a month after i got the second one, would have had to wait all this time for a "maybe" fix, even now i have my doubts as this has been noted since they first introduced crossfire. Will not buy another one of their cards. Nvidia seem to be very prompt to fix any issues with their drivers, although there are rarely any problems with them.