Hi, I'm getting a weird shadow artifact on my wall meshes where they contact. I've adjusted the UV's every which way at the proper spacing and even adjusted lightmap size and still can't get rid of it. Does anyone know a fix?

If it goes away with dynamic lighting and comes back with static, it must be something to do with your lightmap.

It’s there during dynamic lighting as well, unfortunately.

Strange…

You may need to sew a few of the uv islands/shells together and lay them out in order rather than a quick peel.
I would try putting the connecting pieces side by side, even if you don’t want to sew them together.

I don’t it’s your UVs because then it wouldn’t happen with dynamic light. Feel free to make a tiny project and put the meshes in there, I’ll take a look…