Question Horizontal line artefacts

photon123

Distinguished
Nov 12, 2010
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I just bought ASUS XG27UQ monitor. I have a ZOTAC GeForce GTX 1080 graphics card. Unfortunately I am experiencing randomly appearing horizontal lines of noise. I tried playing with different settings, and it appears that if I change in the monitor settings from Displayport 1.4 to 1.2, the lines disappear, and all works fine, except that I can't use HDR. Any idea what is going on? How to solve this? Is there a problem with the monitor? Graphics card? Some setting? The problem occurs at all refresh frequencies, even 60Hz. I use the displayport cable, that came with the monitor and the latest Nvidia driver.

Also, I am not quite sure if G-Sync works. The Nvidia control panel seems to give contradictory information. In 3D Settings it says that the monitor is G-Sync compatible(as it is), yet in "Set up G-Sync" it says it is not. How do I know for sure if it is turned on?
 

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