NVidia sli setups were / are having problems in Crysis 2 as well, so the problem isn't restricted to just crossfire setups.
This is from the CatalystCreators' twitter feed :
" For Crysis 2 - looks like the app changed something last minute, so we need to update the Crysis 2 CAP - will update once ready "
http://twitter.com/catalystcreator
This is from the CatalystCreators' twitter feed :
" For Crysis 2 - looks like the app changed something last minute, so we need to update the Crysis 2 CAP - will update once ready "
http://twitter.com/catalystcreator