My monitor has a max resolution of 1280x1024 and the edges in the game look pretty crappy except when extremely zoomed in. Further, rivers in the distance look terrible!

I've tried fiddling with various settings in the Catalyst control panel, but no matter what I try, I can't get better than the 4xAA and 8xAF allowed under game settings.

Anyone know of any way around these limitations?

Might be better asking at the Rise of Flight community forum,lots of knowledgable people there now!