Hiya there!
I've recently been struggling more and more with this monitor issue as depicted in the picture. It happens whenever I turn the computer on, e.g. when the monitor has been inactive for a while. These lines only occur then, and slowly go away by themselves - unless i change the refresh rate of the monitor. To be frank, this has been an issue for probably over 2 years - but its never been "this bad" before.
Got no idea what has caused this, why it (seems) to be getting worse, or what this type of monitor issue is called.
This is a AOC 32" screen, dont have the exact model - but if it matters ill try to dig deep to find that.
Appreciate any tips or pointers to this.
It's an issue with VA panels starting cold. You probably notice that it's more common when the temperature in the room is cold.
If your monitor has a startup graphic when powered on, or its settings menu appears at the bottom of your screen/overlap with the affected area, you'll know the issue is with the panel and not your gpu/cables if the artifacts appear over top of the menu.
My MSI Optix G24C has the same issues (uses a VA panel manufactured by Samsung), and can take a couple min to warm up if the room is cold and hasn't been used in a while. The issue typically goes away in the summer/resolves itself faster.
This might be it actually! And I do live in a rather cold climate too ๐ But I could do some testing regarding this actually. Thanks for pointing that out!