Thank you Nathan,
I will try lowering the bounces, but is not the problem that the thing is locked into a loop with too little user polling?
As a user, it will be difficult to have one version of a project for the desktop and another one for the notebook. Respectfully, I would rather have an option for the ratracing to go slower, but not lock up my notebook computer. At least we need a warning, or we need Rhino not to be able to start with a raytraced window active.
That file has a mere pittance of objects. I have done projects with thousands of objects.
http://wtrtechnologies.com/thumbnails.html
The engine was a Honda model, but I did the rest, for a friend in Rhino 3D. I wanted a resume’ project. He moved the project Solidworks because that’s what their fab was comfortable with, yet because Rhino is so interactive, it’s an excellent tool for inventing.
[This is why I wanted changes for a better block manager. ]