Shadow Artifacting on Curved Wall Only

Development Architectural and Design Visualization
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I have a bug where as my camera moves back a certain distance away from my curved wall some strange shadows appear(video attached). This is only applicable only on my curved wall surfaces(I have 3 which all have the same issue). As soon as I back up a certain distance from the surface these shadows appear.
Could it be something to do with the depth of field? The rectangle light? I have played with the settings quite a bit and I have not figured a solution for this specific issue.

Using UE5.2.1 and Lumen lighting.

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Is that a nanite mesh? How thick is the wall? Try to check in “lighting only” viewport mode. Are the materials 2 sided?

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Maybe these solutions work for you?

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I imported the materials from twinmotion so they are not nanite.

The wall has two faces and is roughly 4 inches thick. Both faces have the same material and the same issue.
I was able to fix the issue with the 2nd solution shown in the video. Turning off 2 sided ray tracing shadows. Thanks!

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