Problems using metahumans (rendering hair)

I have made an attempt to use metahumans, had to use a default metahuman because creator simply will not open with this account (however I can use it with a different account on the same computer… weird). However this post is for rendering Hair problem, I have tried everything, from shadow types, deleting all lights and create just 1 light to test, tried changing the material, the groom and the scalability settings. In cinematic I get lots of noise and bad lighting

and in Epic settings the hair looks terrible (I did force LOD 0)

At the moment I want to use metahumans for linear content and not real-time (hopefully with lumen, not with path-tracing).
Any ideas what to do?

Note: in the exterior also gets some noise, but it looks much better. the main issue is in an interior shot.

Thanks