We recently upgraded from Arnold 126.96.36.199 to Arnold 188.8.131.52, HtoA 2.2.2 to HtoA 3.0.3.
I noticed a problem with the SSS model changing drastically from previous shaders I'd built. This problem being in the Randomwalk SSS model on the Standard Surface shader.
As you can see in the image attached, I am comparing the Arnold 5.0(left hand side) setup to the 5.1(right hand side) setup and the new 5.1 setup is clearly acting strangely. I dont see much of an issue on larger objects but as soon as you start using Randomwalk SSS on smaller objects such as grass, or these thin tubes it starts acting very strangely, absorbing all the light and not really budging much even when playing with the sliders as done in the previous version.
These 2 scenes are set up identically but are rendering quite differently.
Has anyone else noticed these differences or is this perhaps a bug in the new 184.108.40.206?
Please let me know your thoughts,