PS: with no texture, just a VrayMtl with a color 

Hi Jeordanis!!

I've used. I'm using default presets from hair from guides and it's random I guess like you can see in added pic

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Attached Files:

IMG_3385.JPG (3503884 bytes), IMG_3386.JPG (3440650 bytes), IMG_3387.JPG (4114819 bytes),

and when I turn off mesh from strands everything works fine =\ . however I need the mesh from strands to render texture with vray properly 

Hi jeordanis 

Yes, I do, I'm using the lastest nightly build of Vray (3.40.06), I'm waiting to hear from you about a the solution or a way to avoid this issue

best regards

Felipe Luiz  

Hi!

I tried with other render engine (maya softwate) and I had the same issue. but when I change the strand mesh type ( in mesh from strands) from flat ribbon strands to cilidrical strands I didn't get the same issue, but the time of render increase by 5 times. so I think the issue could be due the ribbon generations algorthim, becouse it is not using the surface comb directions. you can see at the pic below an example 

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Attached Files:

IMG_3391.JPG (3683014 bytes),

Hi jeordanis

What is the render engine do you advise me to use?, once with vray we have this issues that turns impossible to render with

best regards

Felipe luiz