visual Issues with Ray Traced Shadows

Development Rendering
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1

I’m experiencing visual glitches when using Ray Traced Shadows in Unreal Engine. These issues disappear when Ray Traced Shadows are turned off.

The glitches can appear randomly during work but can be reliably triggered by toggling the Path Tracing preview mode on and off. They also tend to occur when there are more than 4-7 light sources in the scene.

Interestingly, the issue is completely resolved when switching to Substrate Materials. However, I’d like to understand the root cause of this problem and how to fix it without relying on Substrate Materials

2

99.99% sure this is a driver issue. make sure you’re using the latest GPU drivers, and if it doesn’t work you may need to consider rolling back a few versions instead.

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3

This is a driver problem. I have this issue exactly, I’m on a laptop 3080 Ti 16GB, I have to use older drivers to avoid this. Wish there was a better solution. It only happens if I have too many ray traced shadow lights.

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