Rage not responding in eyefinity

[rdf2457]

Disable eyefinity and Rage works fine, I go into settings and set to 5760x1080 accept then start game
Rage hangs up alt + tab out of game and windows shows Rage not responding. Disable eyefinity and game will
play, game settings has 5760 in it but won't work. Did clean install, redownloaded 3 times, same problem.
6990 card, all other games work fine, any ideas