RTF is a global modification that replaces all towns in the game.

No, the model actually gets corrupted during import. Here, I'm extracting it from Heroes, and this is what I get, so it will be like this everywhere.

I think we need to optimize the face and hands in Polygon Cruncher to reduce the polygon density.

Damn, does the editor crash the model because of the high polygon count? And is it the same mess in the game? It's just not very visible in the picture...
P.S. I doubt Polygon Cruncher will automatically do a good retopology.

Added 1 minute ago
P.P.S. And look, in the first screenshots, part of the throne was missing; did you do something with it later, or not? Because now it's displayed completely.