It is a nightmare for sure I tried making this render in the latest Poser release using as pretended " the updated Volume features " I could not even fix the speed with the Atmosphere hack like in Poser 13.1.5.... I could not make the render in Poser 13.2 it just hanged ! I had to open poser 13.0.3 .... to be able making this render with Volume features and clouds .... I am really disappointed rather then fixing it it got worse.

Rendered in poser 13.0.3 in less then 2 min " Impossible rendering in the latest Poser update !