Hey,
so I already solved it!
It was happening because of metahumans LODs.
The cloth had only LOD0, and when metahuman changed from LOD0 to LOD1 etc. The skinning problem occured.
When i disabled all LODs on metahuman, the problem disapeared.
So I got second question. Do you know how to do this right? Without disabling metahumans LODs?