Bought this monitor yesterday. before i had a asus vg248qe and it worked just fine. i tried 2 different display port cables and both slots on the gpu. my gpu is a 1080ti.
In the link you can se the problem
https://www.youtube.com/watch?v=TwQk-KsC6nM&feature=youtu.be
In the link you can se the problem
https://www.youtube.com/watch?v=TwQk-KsC6nM&feature=youtu.be