The longer I run Rhino the longer it takes to open a file or create a new file. Eventually it gets to the point where Rhino becomes entirely unresponsive.
I then have to kill Rhino.
With some regularity, Rhino gets into a state where the OS thinks it is running (ie has the dot below the Rhino icon in the dock) but Rhino is not running (ie not visible in task manager).
How long is long? I have had both Rhino 7 and Rhino 8 WIP open on my M1 for a couple of hours with multiple documents open (including your model that took ~15 minutes to open before that got fixed), and I’m not seeing a slow down or lockup.
Anything particular you are doing that is causing the lockups?