Registry policy processing
Computer Configuration\Administrative Templates\System\Group Policy
Determines when registry policies are updated.
This policy affects all policies in the Administrative Templates folder and any other policies that store values in the registry. It overrides customized settings that the program implementing a registry policy set when it was installed.
If you enable this policy, you can use the check boxes provided to change the options.
Do not apply during periodic background processing prevents the system from updating affected policies in the background while the computer is in use. Background updates can disrupt the user, cause a program to stop or operate abnormally, and, in rare cases, damage data.
Process even if the Group Policy objects have not changed updates and reapplies the policies even if the policies have not changed. Many policy implementations specify that they are updated only when changed. However, you might want to update unchanged policies, such as reapplying a desired setting in case a user has changed it.
If you disable this policy or do not configure it, it has no effect on the system.