Okay, here's an example of how quickly dynamic hair renders in P8. This image is 717x643 px (click to view full size). Render settings are reasonably high: lots of shadow samples on the lights, 2 IDL bounces, 3 pixel samples, 0.7 shading rate, 376 IDL samples, displacement on, number of threads set at 6.

My computer is virtually bogged down, because my hard drive is full, and I had several programs open.

The image rendered in 30 minutes and a few seconds.

If that were transmapped hair, no way I could get an image of that size to render in that time at those settings. (Incidentally, the scene is Poser World's Talk Show.)

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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