Standard computers - every 90 minutes with a random offset of 0 to 30 minutes. GPO for computers is also updated whenever a restart is performed.
Domain Controllers - every 5 minutes.
This can then be configured differently using GPO:
- Computer Configuration - Administrative Templates - System - Group Policy- Group Policy refresh interval for computers
- Computer Configuration - Administrative Templates - System - Group Policy - Group Policy refresh interval for domain controllers
The refresh interval can be as small as 0 minutes (which means it refreshes every 7 seconds), and as large as 45 days.
Refresh offset times can also be changed for between 0 minutes and 24 hours.