I have a Eyefinity configuration whith 3 monitors, in the middle monitor i have like vsync is off, but is on , this happend on every game, i change the monitor for another is always in the middle the problem if same knows something is appreciated because it is very annoying thanks.
the reason why it worked for me is that it was in 1920*1080 resolution when i started up for the first time then i switched it to 5868*1080 (my default w/ bezel corr)
that fixes aspect ratio and fov. so when you start game switch it to 1920*1080 then hit apply then switch back to your default ...
I picked up a copy of Spiderman Shattered Dimensions today, and it looks like it doesn't fully support eyefinity. I had a look around but cant find any config files or anything to play around with the settings.
Here is a screen shot of it running at 6048x1200, Ultra settings, at ...