Siri Accounts Faults in MAC OS Catalina (10.15.6): (Process Demon Faults: accountsd + deleted + locationd) VERY slow CPU!
There was a memory leak in the kernel in your version of 10.5.6 - please update immediately to the supplemental update. Build 19G2021 should fix this issue.
Not just the supplemental update is needed, but Supplemental Update 2.

https://support.apple.com/en-us/HT210589
https://eclecticlight.co/2020/08/16/last-week-on-my-mac-apple-leak/