The startup time on my PC was about 80 seconds! It was reported to me Rhino 8 Slow Startup - #13 by Zsimon by @Japhy this post and now Rhino starts up in seconds.
I have been using the Space Mouse Pro for many years, and for the past 2 days I have switched to the Space Mouse Enterprise. I guess customization of many commands was the problem.
However, I have noticed a problem that I imagine may be related to this.
If I invoke a custom command from Space Mouse Enterprise assigned to a button,
this is executed with about a 6-8 second ( Not all commands, just a few) delay and the fans on my pc increase their revolutions until the command is executed.
This does not happen by invoking the command from Rhino.
-Simon