I just recently started playing aces high with a 3 monitor setup at a resolution of 5760 x1080. I noticed that at this resolution there is a horizontal line that runs across all of the screens. Any fast movement cause the halves of the screen above and below the line to look like two pictures that are not perfect aligned. I tried turning off v-sync and it seemed to make it a little better but it did not completely remedy the problem. I'm running the game with a max texture size of 2048 and anti aliasing set to max.
system specs:
amd phenom 2 black edition 955 quad core 3.2ghz @ 3.7ghz
XFX 6870 1gb 900mhz clock @ 935mhz, 1050mhz memory @ 1185mhz
8gb of Gskill 1600mhz
Asus M4A88T-V EVO/USB3 MB
1 TB hard drive
x1 Hannspree 23" lcd 1080p (center monitor)
750w antec PSU
x2 HP 23" lcd 1080p (side monitors)