Here's a workflow tip. Don't try to deal with VSS in a scene loaded with stuff.

When I work with a figure, that's all that I have in the scene. I use VSS repeatedly until the figure looks how I want. Then I either save the figure entirely, or save its materials as a material collection. Next time I want that setup, I don't bother with VSS - I just load that figure or that material collection.

Similarly, I work with hair by itself, until it is right, then save that.

I work with other things and save them.

Then I assemble the scene.

Same with airplanes or cars or whatever.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)