"I am going to be nitpicking, as we usually are when commenting on top-notch work. The only thing that strikes my eye here is the weird reflections on the black air duct on the ceiling. I understand that those are reflections of bright surfaces…"
"I ran a vanilla version of 2018 Mechanical, just to see if it was different, and Arstudio runs OK. So... presumably there is something loading or a setting causing the problem in my day-to-day Acad set-up!
I loaded my custom routines into the…"