how to disable trace reflection / refraction in vray hair3 mtl

[asin_asinn]

Hello, is there a way to disable trace reflection / refraction in vray hair3 mtl? hoping more speed increase in rendering.
im using maya 2018 & vray 3.60.04

[nikolay.kusht]

I don't think there is a way to do that, but you could try lowering down the Transmission and the Primary Amounts and see you if that would help.

[^Lele^]

Hello, is there a way to disable trace reflection / refraction in vray hair3 mtl? hoping more speed increase in rendering.
im using maya 2018 & vray 3.60.04

What do you need the speed increase for: look-development or final renders?
For the former, you can raise Noise Threshold in the render panel, and that will lower the amount of work V-Ray will have to accomplish.
As for finals, the shading model relies entirely on tracing, even to establish color, so there is no way to turn those off.
A simpler shading model, which is also quicker, is the old hair shader.
But looks will be quite different, be warned.

[asin_asinn]

Hello, thanks for the input Nikolai Kusht & lele, its for final result & production, will try to reduce transmission. Thanks