How do I fix this wall light show, I've been baking, light texture set, I don't know what's the problem

Development Rendering
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In the middle of the wall is a separate mesh

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Hi!

Other will tell you not to use modular walls… and to be honest in this scenario it’s unnecessary …
BUT if you go 0.1 - 0.15 with indirect lightin level scale and 0.6 with smoothness + production build: those should disappear!