IMO, this is about the best so far. Shadow Blur Radius on the lights: 8.5. Sounds high, and not sure if it would be ideal for the rest of the image other than the hair. But I think this looks pretty good.

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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