Black flichering bars with V-sync

[Terralin]

Hi,

today i got my new Eizo Foris Screens. I hooked them up and cofigurated them with Nvidia Surround.
My problem is, that i get black bars moving up and down on the middle an right screen. This just happens when i activate V-Sync.
I use a GTX-780 and the latest drivers.

I hope you guys can help me.

Sorry for my bad english

[cybereality]

And you using adapters/converters? Can you try switching around the cables? May just be a bad cable/adapter.