After installing 17.3 RU22 increased memory usage is noticed even during off hours
The domsrvr process specifically is seeing increasing utilization
Release : 17.3 RU22
The fix has been released and is available here:
https://support.broadcom.com/web/ecx/solutiondetails?aparNo=99111860&os=WINDOWS-ALL
As always, we recommend testing in a non production environment first