Issue: what is this new pepper dust on hair render I have now?

mayleshop

hi, I can;t figure it out on this problem.  I have some kind of pepper, black pixel, grain effect over the hair on renders (iray) since some days.

I have no idea where to start to look on how to fix it.

my spec.

i7 comet lake

16gb ram

nvidia RTX2070 8GB

M.2 1T  drive

asus system

daz 4.15 pro last update 07/feb 2021.

 

I have no errors, render complete 100%, but when I'll pass the image on photoshop to the montage heeeeek, what is that?

engine is IRAY GPU only (no cpu). Material shine (over present) is apply first, then the colour...

hair are oot turbulent, but i noticed also on other vendors hair (for example monica hair have the identical issue), and NOT all hair, have this issue. Some render correctly in about 20-30 minutes.

 

I have try also on my other PC, with similar specs, (less powerful). bue result is the same... got the black points.

 

anyone faced the same issue?

 

thanks in advance

Tiziano

 

 

 

Daia

Hi! Same thing is happening to me! Started after I updated to 4.15 version, everything was fine on 4.14, so I guess it has something to do with the new update. Anyone knows a way to downgrade version?

markusmatern

You may want to have a book in these threads:

https://www.daz3d.com/forums/discussion/465896/hair-renders-with-weird-glitches-could-really-use-some-advice

https://www.daz3d.com/forums/discussion/469166/fireflies-problems

mayleshop

than kyou for your comments, I will follow the post you linked above. Cheers