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The original was posted on /r/monitors by /u/TyRdt on 2023-08-21 13:46:40+00:00.
Last last year, I purchased a 27" iiyama G2770HSU-B1, and it has been great for both work and play. Recently, out of nowhere really, it has started displaying a flickering horizontal bar maybe 3cm tall and spanning the width of the screen
This appears to only happen when running at 165hz. It is connected by Display Port, and I have tried different ports on the GPU, a different cable that I already owned, and a new cable that I bought in in the unlikely event that both my my cables were bad.
Graphics drivers are up to date.
After a while (maybe 20 mins or so) the problem seems to go away by itself.
What could be happening here? Is the described issue common? Can that specific area of the monitor be an issue only on that specific refresh rate? It all seems oddly specific