Does this happen specifically in this poser file or does it happen in several? If it's in several, are there things in common, like a specific object or specific texture?

Have you considered not using poser shader tree but just the normal Vue textures? I never use poser shader tree, I don't really like the look of the materials and plus there's no control in Vue. I mean, if I want to to adjust highlights or bump, I can't do it if I'm using the poser shader tree.