big black border on triple screen setup

[TheGhostJD]

Hello everyone recentrly i got a third screen and ofcourse i want to play FS17 on it so i went to nvidia control panel and putted the surrounding option on and configured my three 24'' as one big screen with 5760*1080 resolution. So i started farming sim up and when the startup video was playing i had no problems only in a widescreen form which i was expecting but when i'm in the main menu i get a black border on both my most left and most right monitor which is in a form a circle which you see only a part of. i checked the resolution in game and this one was 5760*1080 so no problems there i adjusted the viewing angle did nothing to it only made the view in game bigger but the black border was still the same. Never hard problems on other games. Any one having an idea?
The gear i'm running:
-2 MSI Mag241C(left and right screens)
-1 MSI Maag241CR (middle screen)
-GTX1060 (6GB)
Many thanks


Edit Farmer1602 : moved from French part to English part