I`m not going to describe this issue very detailed, because it`s very hard to reproduce even if you have a lot of runbooks. Basically what you will see is that each PolicyModule.exe process running can delay the Logon process with ~1 minute if Monitor Date/Time Activity is used in each runbook.
So the more runbooks you will have that implement this activity desto higher the logon time. If you have 1 runbook server only, it will be more observable.
So if you see any reconnect issues on Orchestrator or sluggish logon, look carefully at your activities: Monitor Date/Time activity especially.
Let`s say the issue itself is more complicated (as in what happens behind the scenes), but you have some workarounds to decrease the logon time:
-increase the number of runbooks server, try to host policymodules with these activities on different servers/OS.
-use other activities insted of the Monitor Date/Time Activity - try to reduce them or implement another logic for the runbook to achieve the same functionality.
-reduce the number of GPOs on the runbook servers.