HELP with strange display issue

[KassielOs]

Hi, have a strange issue, maybe someone had similar. My AOC Q3279VWF monitor is 75 Hz (https://eu.aoc.com/en/monitors/q3279vwf/support), if I keep WIn10 desktop at 60 HZ no issues at all. But, if I change it to 75 Hz, screen starts flickering and then goes off and on but ONLY in browsers (doesnt matter which one, tested firefox, chrome, chromium, opera) and only when the web page has white background.

Does anyone have any ideas what this could be? It only happens in this specific scenario described above.

 

Tried a different HDMI cable, a different monitor ... still the same. GPU is RTX 2070Super Gaming X on Ryzen 7 3700x and Gigabyte X570 Gaming X.

Tested older and the newest NVIDIA drivers, same issue.

Tried with some online solutions from similar problems mentioned on different forums .... windows background is solid color, automatic accent colour pick in on, hw acceleration disabled in all browsers). Still nothing helped.

Tweaked NVIDIA settings to high performance.

 

So ... only while doing something in desktop mode (not games, not in any full screen app) and only if a browser page (no matter which one) has white background while monitor is on 75Hz.

 

Video (you notice screen flickering on the top and the goes off, on again and this happens in a loop): 

 

https://i.imgur.com/A9fTrP4.png (settings)

 

Never had anything like this or heard about anything similar. Does anyone have any ideas?

 

Thank you

[KassielOs]

Solved ..... It worked ok through DP 1.4 port so HDMI port on RTX2070 S is faulty and had to be replaced with a new GPU (under the warranty).