Following because I've been having this issue since I had to reinstall the OS and in so doing, wound up with 20H2. Previous to that, I was running iCUE without issue. It's the same symptoms as yours, though I haven't been able to track it down as closely. But it's completely random, and can even happen while idle. And you're right...it seems to be every 2-3 days that it happens. No errors are thrown, nothing that I can see out of place in the event log or reliability tracker...other than the forced shutdowns that I have to initiate to get the system back. The only way I know it's going to happen is that my case fan lights (controlled by the Commander Pro) will reset to default. I then have about 20sec of iffy responsiveness before a complete freeze happens. By "iffy" I mean that I can't initiate a restart, but I can close browser windows and stuff like that. Because of the case fans going all wonk-a-doo, and after uninstalling some other programs that I figured might have been causing a conflict (Razer's app and EVGA PrecisionX), I had my sights on iCUE being the culprit.
Next time it happens (as long as it doesn't happen at idle), I'm going to see if I can find that service you mentioned. Do you restart the service or end it to stop the freeze?