I ruined the nebula I thinks, I don't like the changes. It also went to 11hr from 3, so yeah.
But the ship itself is using no roughness maps this time. Also added a surface layer for the windows glass masked with a new window mask image. The model came with very detailed window scenes which shouldn't be visible when the sun is hitting the window. Some of the windows aren't illuminated at all anymore and not sure why, the map I had includes all windows which were lit (converting them grayscale and ramping levels up until a hard white/black image)