I just read your other thread about this topic and I see that eyefinity isn't working for you in that game. So make sure you have all the lastest drivers for your card (which is 10.3a
((which has future eyefinity features)) and regular 10.3 which is going to be released on the 24th) which will fix, as ATI claims, all eyefinity problems. After you have done that if you haven't already make sure your three monitors are made into a group (if you got the game running in eyefinity you probably have already done this) and then do the bezel correction of the monitors. After you have done all that test the game and see if it plays better.