[diffeomorphic] some hairs look like plastic in cycles

bigoskar00

so I have this issue with diffeomorphic where some of the hairs that I export looks like they are made from plastic. This only happens with some hairs, while some look perfectly fine off the box and others look fine in eevee for some reason some look weird in cycles and only in cycles

here are some examples:

the hair is https://www.daz3d.com/alyssa-ponytail-hair-for-genesis-8-females?srsltid=AfmBOorllVCJVUcgEAn377Nk6OHSMRtskKLNoroaZkQIysz0kr4z5sS5

before someone asks I know about light paths and how some hairs need the light paths to be cranked up, this are the numbers that I used for this preview

and as a comparison here is the exact same hair with nothing changed in eevee

as you see it looks more natural like actual hair

this happens with a few of the hairs that I use but not with all of them, some look perfectly fine in cycles right out of the box with no issues, here are some examples

https://www.daz3d.com/hs-smooth-bob-hair-for-genesis-9-8-and-81-females?srsltid=AfmBOoqBxoX8wrPR8r16_skLlON1-EzRI6d63WaFbMamleXyiVEUPfId

https://www.daz3d.com/catrina-hair-for-genesis-9?srsltid=AfmBOoo4JKaFtE7dMbGkYQKngYKRKFJeXp_LXuSAqd0SV-ehxGtD7q3A

https://www.daz3d.com/fe-refined-short-hair-for-genesis-8-and-genesis-9?srsltid=AfmBOorUr7ASQ0wLtNuFOynAQ7EZpkX_Jr2N3yAdbKYSRelIWOUSAgo6

those three hairs looks fine in cycles and eevee, I have no issues with those

Padone

What is your light source ? It seems there's strong lights from all sides, while reflections need a main light on a relatively dim environment to show off better. Did you try the same light in daz studio what you get.

hardwire666

Make sure it's using the normal map. I imported the asset myself and the Normal map makes a massive difference Diffeo doesnt import the normal map in either FBX compatable, or Extended for that asset.