I have a problem, where during animation, there is a visible separation seam between head and the body of the metahuman.
When in A-Pose it looks relatively fine, but during any animation there is a seam.
In the screenshot I have a custom material applied and was using the body and head meshes in a custom blueprint.
To narrow down the issue, In the default blueprint that comes when you download metahuman from quixel, without any changes made to it, and with the default unchanged animation that also comes from quixel, the issue still persists.