Disable background refresh of Group Policy
Computer Configuration\Administrative Templates\System\Group Policy
Prevents Group Policy from being updated while the computer is in use. This policy applies to Group Policies for computers, users, and domain controllers.
If you enable this policy, the system waits until the current user logs off the system before updating the computer and user policies.
If you disable this policy, updates can be applied while users are working. The frequency of updates is determined by the Group policy refresh interval for computers and Group policy refresh interval for users policies.