Hi all,

I am experiencing a weird graphics glitch that is most probably related to my 34" curved AOC monitor: at times I have a vertical line right in the middle of the screen. It only appears in (cut)scenes with a darker background (red/black).
BUT I am only having this with GOG games, i.e. Cyberpunk and BG3. Don't have it with Steam, tried it there with New World, Jagged Alliance and Pathfinder 2. Tried changing settings, cables, HDMI & DP, nothing helped.
The weirdest thing: when I fire up GOG client, the little window appearing with the purple logo against the black background? I am seeing that line, too! Though not on the home, library or store screens...
Anyone else experiencing this? Before I send in monitor, I'd like to make sure that it's really hardware related.

Could be GPU/driver related. Unless you have the same game on both GOG and Steam and can directly compare them, you haven't established that it's a software issue.

Try to burn it out with maximum brightness, contrast, different Hz rates. I got one at other monitor due to transport impact.
It disappeared when I did above. Unfortunately I transported it again...

Could you upload a screenshot when it occurs? It could help in determining whether it's a hardware or software issue.

https://www.reddit.com/r/ultrawidemasterrace/comments/1061td5/aw3423dwf_line_down_center_of_screen_restarting/

Is it anything like that?

Google the issue, there seem to be numerous fixes, one of them might actually work :)