Wow, the level of entitlement and ignorance floating around in this thread amuses me. There's so many people posting in this thread that are using multi-GPU systems, and they don't even know how to identify a driver issue, or what group is in need of providing a fix.
Anyway, the flickering issue was already addressed by Crytek. For AMD users, a link was posted from a Crytek rep pointing to a CAP hotfix that resolves the flickering issues for AMD users. Haven't heard anything for Nvidia users, so I guess they're SOL and stuck with using third party fixes until Nvidia gets off their butt and releases proper drivers for the game.
Graphics- - Crysis 2 Multi GPU support causes insane flickering.
- - Possible Crossfire Flicker Fix
AMD has released a CF fix for Steam versions: link
AMD has released another CAP fix: New CAP fixes CrossfireX performance and flickering
Thank you very much for your patience and your assistance in helping find and fix issues! More to come! If you know of any answers/information that's not listed here, please PM me and i'll add it in.
Regards,
- gamesas Team
http://www.gamesas.com/forums/topic12386