Ok creating a node for each material is not going to do anything for this image.

The thigh material area is showing two kinds of problems simultaneously. To fix one, you must raise bias. To fix the other, you must lower bias. Can't do both at the same time on the thighs, right?

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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)