Full stop... At least at my side.
Why? Because my PSU once again died (god damn patheticly poor Chinese work >.<)
Few of you pointed me that hair, leather and lycra goes super shiny when normals are inverted or backside of surface is visible. I did small research on paper and I have some clues how to fix it. It would probably slightly increase the time of render (can't confirm).
Also in meanwhile I was looking at the roads, both wet and dry and I researched other construction of this material (also on paper).
But I'm unable to apply anything of it, because I'm stuck on much weaker PSU and integrated graphics which runs blender in 1 frame per hour (with simple cube -_- ).
So for at least 2 weeks I'm completely stuck. Can't even rage in Battlefield.