The license service encounters a CPU usage fault due to insufficient licenses.

At the very beginning, I found that the server was very slow. I found that the llssrv.exeand lsass.exe processes almost wiped out the server's CPU usage. I searched the internet for a long time and checked that all the patches had no results. Then I opened the authorization and found Microsoft BackOffice windows, each created 500 licenses in the purchase records. Which two processes are not occupying CPU resources? Why? Is it necessary to enable this service? After searching for half a day, there is no result. Hope you can give me some advice.