Alembic Skeletal mesh - UV seam problem

Hi everyone;
I’m trying to render some alembic animations as skeletal mesh.
I was having trouble with normals when the character rotates backward from the starting position and solved it with adding command below to ConsoleVariables.ini file.
r.SkinCache.CompileShaders=1 r.SkinCache.Mode=1 r.SkinCache.RecomputeTangents=1
Normal problem solved with this , but this time i get hard smoothing edges on UV seems. i treid all kind of import combinations and about to go crazy with this! :frowning:
is there something i missed?
Thanks for help
Best regards