🔥METAHUMANS PROBLEMS - Golden Hair, Livelink doesn't work, Locodrome MAT is GREY. [PLEASE HELP]

Welcome

To summarize, I’m working on a short film — it took me five days to prepare the MetaHumans, their clothing, and to fix all the bugs. WITHOUT DRAGGING THIS OUT:

1. META HUMAN HAIR TURNS GOLD DUE TO FIRE VFX IN THE BACKGROUND, NOT DUE TO LIGHTING – HOW TO FIX IT?

  • This happens when I change Material Scalability to anything higher than Medium.

  • It is visible on Streamable.

  • Earlier I had a strange bug related to MetaHuman hair, which I fixed by disabling RBF Interpolation in the Groom Assets, but I don’t think that’s related.

2. LOCODROME IS COMPLETELY GRAY, NOT NEAR THE META HUMAN’S HEAD, AND I CAN’T MOVE IT.

  • I don’t know why this happened.

  • I don’t know why the locodrome is gray and why I can’t interact with it.

  • I need it to be positioned at the MetaHuman’s face and to be selectable in the widget viewer instead of being gray.

3. META HUMAN LIVELINK ANIMATION DOES NOT WORK.

  • For it to work, I have to add an animation and disable “Disable Post Process Blueprint” on the Face.

  • When I do that, the head detaches from the body and there is no way to restore it.

How do I fix this?
I would really appreciate the help — I’m having a lot of problems with Unreal Engine.