Rhino can not quit. (only forced exit)

Update: After some tests I have identified and “solved” problem. I uninstalled the software 3D Connexion 10.2.2 (the latest available), and the problem has disappeared. I installed the old driver and Rhino 10.1.2 operating normally and closes immediately, I reserve a few hours to see if there are improvements on the annoying freezing during pan and zoom.
I had a similar problem in the past with my Wacom tablet (I use with Rhino). Even in that case, the removal of the driver (the latest available) and the installation of the previous one has solved the problem.

@dan