Does your Crossfire work ok?
 

I've noticed a few people mentioning that their Crossfire/SLI is now working, either since the last retail patch or as a result of their own efforts.

Try as I might, however, I cannot get my 5770's to use CloD at all - a single card gives me a nice steady(ish) 30fps at mostly medium settings, but switching XFire on cuts that to 15-18 with massive peaks and troughs, and horrific stutter.

So - has anyone else got their ATI Crossfire working? I'm particularly interested in hearing from crossfired single gpu users (e.g 2 x 5770, 2 x 4870 etc), as the dual-gpu cards, while using crossfire seem to do it differently and have their own set of issues etc. In the absence of a proper profile from AMD, what do you guys do?

mine does work, i had problems to begin with, mainly with catalyst ai, i messed about with ati tray tools, and other programs, still no luck, so i unistalled the driver, cleaned, then reinstalled, left cat ai on standard, and it works, using gpu-z in two windows i can see load on both cards and both cards working at there stock clock speeds.

im using 2 4890's and getting 60 fps most of the time.

Yeah, just done a clean install of Cat 11.6 and that seems to have helped tons... I can now use both cards for about 40 fps with barely any stutter. :D

The whole ATI Tray Tools optimisation is very confusing... I can't even find crossfire profiles to apply, let alone half the stuff mentioned! Need an idiots guide I think ;)

I have a 5970 and 2 x 5870... Try Radeon Pro and apply the settings from here > http://forum.1cpublishing.eu/showpos...4&postcount=18 its the only way I get crossfire working at its maximum potential. Otherwise if I leave it to driver defaults I get 20-30FPS somtimes and 60FPS when it kind of works, but only ever 30%-50% GPU utilisation compared to 100FPS>250FPS with 90%-100% GPU utilisation with Radeon Pro.

Yeah I downloaded ATI Tray Tools, not Radeon Pro - can the two run together or are they incompatible?

EDIT: got rid of ATI TT and installed Radeon Pro - get some ok results with those settings but overall not as smooth as the Tray Tools with similar settings, and awful menu corruption. Will stick with Tray Tools for now. :)

Turning on "Disable API monitoring" under settings for radeon pro stops the menu corruption.

I read that, but according to the documentation it also disables some/most of the DX tweaks. Ah well, steadily getting there. :)

EDIT: Definitely seeing the performance degradation over time, seemed like the longer I tested it the worse it got! Any fixes for this?

Radeon Pro has some x-fire profiles to play with. ATI Tray Tools does not have any iirc.