I’m having the same issue and I have tried going back to earlier graphic card drivers, installing new ones and also rolling back Windows updates - still the same. On the current project, the freeze is easily re-produced by duplicating tracks using plugin- and/or channel strip processing.
What happens is that after the duplication is achieved all sorts of spooky stuff happens: the track gets record enabled and recording starts + certain VSTi hangs and start looping stuff. Without me doing anything. After a while, the sound card (UR824) hangs, probably due to feedback from the hung soft synths.
The system basically turns unresponsive and ctrl-alt-del can’t be triggered. Still, I can manage to get back to Windows and choose reboot.
A strange thing is that even when opening the project in 9.0 it seems that 9.5.10 has “contaminated” the system and the same craziness occurs.
Now; I am aware that all music tool developers are having busy days over at NAMM but this has to be addressed.