Thanks for that info, BagginsBill. That certainly explains why I wasn't seeing a difference when I dropped the Turbulence scale from .05 to .01.

RobynsVeil, no I didn't use a shader you posted - didn't even know that's what that was; I thought it was part of a conversation you were having with BB.... or maybe you're not referring to the attachment just above.

Anyway, I'm relatively happy with the default VSS shader at the moment; I'm just trying to get the bump right before I do the final tweaking of other stuff.

Will post the results I'm presently getting when I have a couple renders to show. But since it turns out this isn't node-related, perhaps I'll start another thread.

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3