Hi Bill,
Just an data point. Like Tim, I never used the CGE-Pro HC either. I connect my mount to the computer via USB to Serial cable via a powered USB hub. I use Celestron NexRemote on two different setups. One using the CGE-Pro Mount, along with PHD2 and SGP. For the other setup I use a CGEM-DX mount, along with PHD2 and SGP each on their own Windows 10 OS computer. I’ve never had an issue with the NexRemote. I run all of my equipment, Mount, Camera, Guide Camera, Rotator and Focuser through a powered USB hub and have never had any issues with this setup. On the CGEM-DX setup up, my computer I use is 60 feet away and I run through a USB extender cable from the powered hub to the computer.
It seems to me if NexRemote is freezing, it has lost the connection/communication to/from the mount. Seems like it might be hardware related. The only thing that comes to mind, Do you have the OS/BIOS configured so the USB ports on the computer DO NOT power down? I have seen comments from folks on this forum that you want/need to ensure the USB ports stay active and not power down to save power.
Just my thoughts, Hope this helps you in finding the issue or gives you some idea on how you may reconfigure your setup.
Kind Regards,
Mark