Thanks for the info! I'll log some info and report back!
In my case, Ecobee Suite Manager is 68% of total! If I understand this correctly, it means it is busy ~16 hours every day. Your number looks a lot better since it's only 1.64% of wall clock.
FWIW, it returns to a low percentage after I reboot but hubitat becomes slow and unresponsive after a few days.
