Hey there Steve_GP200,
Thank you for posting in the Apple Support Communities. I understand you're having issues with your Mac becoming unresponsive.
I would recommend checking for the same issues while in safe mode.
"Safe mode can help you to determine whether an issue is caused by software that loads as your Mac starts up.
Safe mode prevents your Mac from loading certain software as it starts up, including login items, system extensions not required by macOS, and fonts not installed by macOS. It also does a basic check of your startup disk, similar to using First Aid in Disk Utility. And it deletes some system caches, including font caches and the kernel cache, which are automatically created again as needed.
Safe mode is particularly useful when you're trying to resolve an issue that doesn't seem to be associated with using any particular app. As always, keeping your software up to date is the first step toward resolving any software issue."
You'll find additional information and how to start in safe mode linked below.
* How to use safe mode on your Mac
Have a good one!