Dark vertical stripes across a 4K render

Development Rendering
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NewLevelSequence.0000
NewLevelSequence.00001920×1080 126 KB

Hello, I am trying to render a 4k image with UE 5, and I get those black stripes across the render, and this happens only with the 4k renders. The render settings are rather basic, everything is default and I added an anti-aliasing setting.

If anyone has any idea what is causing this I would appreciate the help.

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Update: the issue has been fixed by cleaning up the materials of the models that had the issue, still confusing why it happend

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Hi Adrian I hope you’re well.

I’m facing the exact same issue and I’m unsure how to fix it. The material the vertical stripes seem to be showing on when I render at 4k are on a stucco material that I downloaded from Quixel Bridge. What exactly did you do to the material to resolve the issue?

Thanks in advance!

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seems to be an issue with Quxiel assets and Lumen Global Illumination for me, changing it to screen space fixes it for some odd reason

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FinalGeatherQuality 2.0 in post process- lumen reflections, the solution to the problem

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this is fixed by upping the roughness of the material to 2 and setting global illumination of the camera to 2. all materials with this issue need to be fixed by putting roughness to 2. idk why this happens. quick fix is setting global illumination to plugin but it ruins the scene