Question Grainy text and images on when setting display to 144Hz

Dec 31, 2022
This problem has been so frustrating now. I have a 27" 144Hz monitor (AOC 27G2) and an RX 6750 XT. When setting the refresh rate to literally anything above 60Hz, the text and images on screen get grainy.

See pictures below:

What I have tried:
  • 4 different cables:
    • 2 DP 1.2 and 2 HDMI 1.4, and they all produce this same grainy effect.
  • Switched between GPU ports
  • Reinstalled AMD drivers
  • Installed the dedicated AOC Monitor Driver
  • "Power-cycled" the monitor (essentially just pulled the plug, waited 10 minutes, then plugged it back. Didn't count much on this, but I guess it was worth a shot lol)
  • Turned on / off FreeSync
  • Set the monitor to use DP 1.1 / 1.2
  • Turned on ClearText
  • Set the scaling to 100%
  • Turned on "Let Windows try to fix apps so they're not blurry"
....and I'm getting kinda frustrated because none of the above fixed the issue. This also happens in games. Does anyone know what else I can try out here? I really don't wanna through the hassle of returning the monitor.

Other observations:
  • When restarting the PC, the "Restarting" screen does not have this effect at all, which leads me to believe that this is a software problem?
  • There are times where the screen sort of brightens and the grainy effect goes away completely, then it goes back to original brightness and the grainy effect is back
  • The effect seems to be the most mild when setting it to 144hz, and the worst when setting it to 75Hz.
Thank you very much!



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