Are overlapping UV really a big deal if there are no artifacts ?

Questions & Answers
1

All is said in the title.
I have a very close deadline (school assignment) and I’m not skilled enough to fix UVs by hand myself. Most of my assets are coming from an asset pack.

Of course, when baking lightmaps, I have a few errors “there are x objects in the scene with overlapping UV’s…” but when I check it out at runtime, even from up close, there are really little to no artifacts.

So in that context, are overlapping UV’s really that big of a deal ? Do they impact performance in any form ?

Thank you for your time !

2

If you crank up the “Pack margin” in the inspector for generating UV the error should go away.
This will give more space in between UV Shells, if it doesn’t it means your scale in lightmap is too low for that object.

If you don’t see any artifacts, your teacher probably won’t see it either, unless he checks your project.