I've noticed this as well! Skin looks way too shiny and looks like plastic in some instances now, especially in limsa cc. It's on all skin, but waaaay more noticeable on dark skin. I really hope this lighting quirk doesn't show up in game or is fixed by release. Skin just kinda looks bad in general. It's either washed out or looks like plastic. And yes I bumped down gamma correction a lot and it still looked bad.