This KB will show how to set Group Policy Refresh Interval using Group Policy, this is very handy when using Group Policy Targeting.
The update Interval can be set on two level, Computer or User.
To set the computer settings Interval go to:
Computer configuration -> Administrative Tools -> System -> Group Policy ->
Set Group Policy refresh Interval for computers
Set Group Policy refresh Interval for domain controllers
To set the refresh Interval for user settings go to:
User Configuration -> Administrative Tools -> System -> Group Policy ->