Spotlight Issue on Parts

I don’t really know how to describe this so I will attatch a video

When I am using a spotlight on parts, it causes this weird Z fighting looking issue. This completely goes away when the spotlight is off.

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Bumping to see if I can get any awnsers on this issue.

is the wall a group of parts or an union?

I have 2 walls. One is multiple parts, one is a union. Issue persists on both walls. This does not happen on Meshparts however