Crossfire is fine, as far as I can tell SLI is the only one affected... But they did say the patch was going to be reviewed by nvidia or something like that..
EDIT...
2) Will the next patch be fully NVidia certified, and will it have Crossfire support?
NVidia – definitely. CF – still TBD.
http://forum.1cpublishing.eu/showpos...63&postcount=1