It seems clear that making use of forced anti alising out of game is crippling the gameplay experience, as both player character figure and landscape ground surface will vanish from view.
AMD Morphological filtering does seem to work without anything glitching in game, but morphological filtering makes things at a distance look bad (blurred and less defined).
I am using a crossfire setup with two Radeon 7950 cards, but I suspect that this is not an issue with having crossfire enabled on my computer. {F29023}