My cursor freezes up after the computer has set idle for a few minutes and I have to reboot to get it operational again. I tried another mouse, thinking it was a mouse problem, same result. When the computer freezes the keyboard appears to be non-operational as well.
iMac Line (2012 and Later)
A Mac that becomes permanently unresponsive in "Safe Mode" usually implies a hardware fault: Contact Support to have it thoroughly evaluated. A faulty BT module is certainly possible.
Although it doesn't usually help, you might try reinstalling macOS, or just the most recent update.
Try the latter first: Download macOS Mojave 10.14.6 Combo Update
If that doesn't work: Reinstall macOS - Apple Support
Back up your Mac as a matter of course. To learn how to use Time Machine please read Back up your files with Time Machine on Mac.
Please determine if the same problems occur in "Safe Mode": Use safe mode to isolate issues with your Mac.
It also occurs in safe mode. I just read to reset the bluetooth module, so I am trying that now. Will have to wait and let the computer to be idle to see if it continues to freeze.
Thank you for your suggestions and help
iMac freezing up
