We also found the registry key 'DeleteUserAppContainersOnLogoff' but it seems not working on windows 10 (tested with 20h2). We also use try the Cleanupprofiles GPO, but that not ideal because it as to be set to 7 days or less. We tried removing some users profiles manually (with the gui)and it's delete those multiples rules (Delprof2 not removing those rules when deleting profils and cause problem with modern app The best workaround is to reinstall the pc ( each 2 months for some.

We found a lots of rules on Windows firewall ( with Get-NetworkFirewallrule),sometimes more than 5 000 They have a normal local profil with redirected Documents folder. When a lots of pupils open a session on a pc ( 20 or more), the process localservicenonetworkfirewal is using a lot of CPU at user login.

We use Dell optiplex 3010/3020 with i3 ,120 gb SSD, 4gb ram,Windows Defender with SCCM, windows 10 64bits 20h2 Education ( plan to migrate to 21h2 soon) We have a long term problem with Windows 10 ( 1909, 20h2)

Windows 10 firewall gui