I have been working on the new hair style and managed to improve render times a bit more by doing some clever stuff with the materials. I have however run into a problem with the hair strobing on quick movements. Its not a problem with the sample level as it persists even when i up the sample level to stupid amounts. I think its simply caused by lighter hairs moving in front of darker hairs. Adding motion blur seems to reduce it so I might have to do some research and tests into that.