Lighting error for modular meshes and open world

[Galileo123a]

So I’ve been having issues in making my open world with modular meshes, each mesh has their own individual lighting for some reason except for the bottom gutter level roof which I messed with a lot. How do I make them all blend together like the gutter level roofs?

Also, since its open world with a day night cycle, should I not need to bake lighting? Should I uncheck allow static lighting and check force recomputed lighting to make it more dynamic? What other settings should I use?

Thank you for any help!

Summary

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[Arkiras]

Just looks like bad mesh normals, can verify by looking at the world normal viewmode. Baking lighting does nothing for you if you are only going to be using Lumen.

[Galileo123a]

Thank you! It worked for me by recalculating normals per triangle in the ue5 modeling tools