Metahuman texture quality is poor even 8K (exported)

Hello and God blessings from Finland!

First post here:

Is there any way to get exported this best quality texture, which is used in Metahuman? You can see al lot difference in fabric and the navel.

Same texture in Metahuman:

Texture in Baked and zoomed (8K - tried also not Virtual like this case), this is the same texture MI_Body_Baked_VT_BaseColor.PNG:

This 8K texture rendered in Blender/Cycles:

Material settings in Blender:

Texture size: