Subject: RectLight Glitches/Overlays in Lit Mode (Screenshots Attached)
Hi everyone,
I’m fairly new to Unreal Engine and I’m running into a strange issue with rect lights in my scene. I’m getting some visual glitches/overlays that only appear when using Lit mode. When I switch to Path Tracing mode, the problem disappears completely.
The issue seems to be directly related to the rect lights in my scene. When I move around in the viewport in Lit mode, I get these glitches, overlapping geometry. It’s quite distracting and makes it difficult to work in Lit mode.
Hello there @Baccunaira! Let’s see what we can do here.
The glitch you are encountering is oddly specific, most likely related to a driver issue or setting mismatch. Let’s test a few options:
Please do a clean Installation of your nVidia drivers, and pick the “Developer” version, as these are the most stable for engine work.
In Unreal Engine, adjust your values for engine scalabillty, to ensure your equipment is not under pressure.
Test disabling Hardware Raytracing and Path Tracing from the engine.
Finally, there are two settings to test in nVidia control panel: Go to Settings, and under Features → Overlay, disable the “Game filters and Photo Mode” option. After that, click on “Manage 3D Settings” in the settings menu on the left, go to Monitor Technology and select “Fixed Rate”. With these changes applied, please restart UE5.
Thank you so much for taking the time to help me out. I was really stuck on this issue. As you suggested, I tried setting the scalability to High, and it worked perfectly! The glitches are completely gone now. I really appreciate your help!
