Same with pwSurface2 using AO.
I did not bother to test and see how long mind you, I just got impatient and stopped the render.
You can bypass the ambient occlusion on the “fur trans” material with the UberSurface/UberHair shader. You can either override the shading rate ( Occlusion Shading Rate Mode: Override” for this material ( and use a higher value to speed the rendering up, like 128 ) or turn the AO computing off ( “Occlusion: Off”. That way, only the shadows will be calculated for this material. It works faster with soft shadow-mapped shadows but soft raytraced shadows are possible as well.
With pwSurface2, you have to turn the “Visible in Occlusion” value to “off”.