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 looks like either faulty cable or dying GPU. Check with another cable and see or move the cable around to see if affects the image.
I've had this issue over two different GPUs, went from a GTX 1070ti to a RX 6700 XT, same issue across both cards. This screen was used on a 1080ti before that too, and same issue there too. So I would assume its not GPU related?