I have seen this on a few servers, top reveals a couple of Python processes together using 100% cpu, they do not go away until you make them go away. “top -c” will show something like:
/usr/local/CyberCP/bin/python /usr/local/CyberCP/plogical/IncScheduler.py Daily
In Cyberpanel check your scheduled backups there is one or more that is bad and needs to be removed. Once removed kill both python processes and they will stay killed and should not return as long as you have the bad backup schedule removed.