shadows1234 :
i guess he isn't getting inconsistent frames since he said it wasn't as smooth
My point exactly is that micro-stutter "feels" like lower FPS, even though technically the FPS fine. I believe the very reason tech journalists started looking into the phenomenon in the first place is because people did blind tests with Nvidia SLI & AMD CFX setups which were maintaining very similar frames per second. Despite the similar FPS, people consistently said that the Nvidia setup "felt" smoother. When they finally got to the bottom of it, it turned out that the Nvidia setup was delivering the same number of frames, but doing so more consistently. The people in tests perceived this as "smoother" gameplay.
Anandtech did an excellent deep-dive on micro-stuttering here:
http://www.anandtech.com/show/6857/amd-stuttering-issues-driver-roadmap-fraps/6
The point is that micro-stutter subjectively feels much the same as low frames per second, but they're actually not the same thing.
So for OP, either:
- the game and/or drivers don't handle crossfire well, and it's one of those few games where you're actually getting lower frames per second when you enable CFX -> this is NOT micro-stutter, it's just bad drivers/game coding
OR
- the game is actually running more frames per second with CFX enabled, but it "feels" like it's not smooth -> that IS micro-stuttering.