I’m having what seems to be a similar issue but it occurs between my meshes, not within a single mesh.
Enabling nanite on my modular meshes creates seams that are not present when nanite is off.
I first thought it what smoothing group problem but nope. It’s not lightmap’s UV nether as it’s real time lighting here. Also the material use no texture, just color and no reflections (it happens what ever material is used anyway, material isn’t the cause).
Anyone encounters this problem and found a way to fix it?
Nanite enable on meshes:
Nanite OFF:
