I`ve got a 4870x2, offline I can enable fullscreen mode and increase the graphics setting, incl grass roads and shadows, the Crossfire icon displays top right and both gpus are running at full speed, framerate is very very good. Online I get constant fps flutters at best I lose 50% of the offline fps and it swings from 5 to 30fps almost constantly, when I turn fullscreen to pseudo my Crossfire icon disappears, one gpu doesn`t clock itself up but my framerate goes back to a stable and acceptable level, not as good as the offline framerate but definately no stuttering etc, fps is around the 40 to 80 mark.
Last night whilst online in pseudo mode I lost my sound about 10 mins into a flight,didn`t return till I restarted the program.
I also cannot exit online maps without ctrl alt deleting to stop the game.
PhenomII x4 955BE at 3.6ghz
4870x2 11.3 drivers
Win7 64bit
4gb of Corsair 1333 ddr3
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