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PG27UCDM text clarity issue at 240Hz after boot or fullscreen transitions

mixolyd8
Level 7

‎01-31-2026 09:10 PM - edited ‎01-31-2026 09:50 PM

Hello, posting this for some awareness and hopefully clarification if others have also experienced this. 

I’m seeing a reproducible issue with the PG27UCDM at 240Hz that looks like an internal timing or scaling problem.

Description:
At 240Hz, after a cold Windows boot or after exiting an exclusive fullscreen game, desktop text look subtly off. It’s hard to describe, but text appears slightly resampled or not perfectly sharp, even though Windows and OSD report the correct resolution and refresh rate. This weird fuzziness to text carries over into games too, so it's not just in Windows. 

Important details:

  • Happens immediately after Windows boots into the desktop, especially when a second monitor is connected

  • Also happens after entering or exiting exclusive fullscreen games (Stellaris reproduces this every time for me)

  • Occurs over both DP and HDMI using the provided cables. I'm primarily using DP 2.1 with DSC off but tried DSC on, DP 1.4 cable (even switching to DP 1.4 mode in OSD), HDMI. No difference.  Just to be sure I also tried a third party DP 2.1 cable with no difference.

  • Does not happen at 120Hz

  • Screenshots look normal. The issue is only visible on the panel itself (I can show photos)

  • GPU driver reset does not fix it

  • Unplugging and replugging video cable does not fix it, but power cycle does 

What I found instantly fixes until triggered again:

  • Switching 240Hz → 120Hz (fixed)→ back to 240Hz (still fixed)

  • Toggling DSC off and back on in the monitor OSD

  • Power cycling the monitor fully 

Same system, same GPU, same cables with another 4K HDR 240Hz monitor (MSI 322URX) does not show this behavior, which makes me think this is a monitor firmware or scaler initialization issue at 240Hz with the PG27UCDM.

Firmware: 108 but also had this on 107 and 105
GPU: RTX 5080 ( tried a second 5080 just to be sure its not a GPU issue)
OS: Windows 11 (latest)

It's unfortunate but I think I'll have to return this monitor. I really like it and wish I could keep it. Prefer it over the MSI, but I don't want to get stuck in an RMA process with no guarantee it'll ever be fixed. I'm posting mainly to spread awareness. I still have a week left to return it so I'm open to suggestions and can post logs too. 

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3 REPLIES 3

mixolyd8
Level 7

‎01-31-2026 09:13 PM - edited ‎01-31-2026 09:55 PM

I wanted to show photos of what I am talking about. You can see how the text looks off in the first photo, like its being compressed. The 2nd photo is normal for comparison. 

photo_2026-01-27_22-15-03.jpgphoto_2026-01-27_22-15-00.jpg

 

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crownlel
Level 7

3 weeks ago

I have the same exact issue on the same monitor.

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ch4mpiones
Level 7

a week ago

Were you able to solve this problem? I really liked the monitor too, but sometimes I see blurry, and I was wondering if my eyesight was deteriorating when I saw this thread. I'm glad to have seen it, but I'm disappointed that there's no solution. I don't know what to do. If it's something that can be fixed with an update, I won't return it, but is this a hardware or permanent problem? Is there anyone who can help?

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