Editor window and menu flickering and glitching

Development Getting Started & Setup
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1

Wanted to check out UE5, downloaded, installed, launched, created a basic project - and getting this terrible flickering, rendering the whole thing unusable: https://youtu.be/NGHQK25mXYo

Computer: Windows 11 with all the updates, NVidia RTX-3090 with driver version 512.59, Intel i9-11900K, 3xM.2 SSD drives, LG CX 77" TV as the monitor.

3 Likes
2

unistall, delete the epic folder in program files x86, and install again

3

h. I have the same difficulty as you. Have you solved it

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I had this problem in UE4. like @Husky211 said, uninstall, and delete the folder

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Try this before uninstalling.

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This happens generally in UE5 and UE4. You do not need to uninstall and install stuff again. That will happen in future. On nvidia, overlay test mode creates this issue.
Please run attached reg, in your registry file. Problem will be solved.

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Dwm]
"OverlayTestMode"=dword:00000005

mpo_disable.reg (252 Bytes)

4 Likes
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Perfect. Thank you :slight_smile:

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I just had a lesser issue, where the entire interface is visible - but the interface flickers when the mouse highlights new choices. The easiest way to fix it without affecting anything else, is to open the Nvidia APP/control panel, go to “Manage 3D settings” and then “Program Settings”. Pick the unreal editor from the drop down menu. Then set “Monitor Technology” to Fixed Refresh. If the unreal editor is running, restart it. The flickering should be gone. Leaving it here, in case anyone else finds this through google. Maybe it’s an issue mostly affecting people with connections via HDMI, since it isn’t so widely reported on..

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