Sorry for the late replay, something intervene and I wasn’t able to continue my project, but now I’m back.
What you said worked and the materials are good, but I have a different problem, some parts of the character are missing in LoD 0 and 1, while in 2, 3,4 are good, when importing in Blender.
First is LoD 0, then LoD 1, then LoD 2:
It’s those 2 pieces of clothing in the front, and also there is a piece in the back missing also.
This test was done on Paragon Greystone Novaborn. Paragons are more complex and good place to learn some things. When it comes to the slot names, they have m01_XXX … m015_XXX, and I did what you said about using different instance when 2 or more slots use the same material.
//Edit: I’ll start a different question as it is different from what the name of this one is.
Here is the link.