7680x1440 (2560x1440 triple monitor) resolution not possible (kind of blackscreen)

[War4U]

Hello,

 

when set 7680x1440 (16:3) in settings.exe i will get no picture (mostly black). All you can see is some icons of other planes moving around and that map thing on the left. Audio is working and it is possible to fly but you don´t see anything.

When setting to single display (2560x1440) everything it is working fine.

So whats the problem here? Where can i set it right?

 

Thanks for helping