Lightmap Issue I think...?

Hi guys,

These 2 planes are identical except for their polygon counts.

One is a 1x1 segment plane, the other is a 4x4 segment plane. Why am I getting these lighting issues? Does anyone know? I’ve scoured through the tutorials and documentation and thought I understood light maps. Is this even a light map thing?

Thanks for any ideas

Do the errors only show up after you bake the lighting? What do the UVs look like?

The errors show up only after I bake the lighting. The UVs are literally just a square, with 0 padding at the edges (which I thought was correct). I can show you a picture if its not clear

You might learm something from this post.