If a GPO has an entire node under User Configuration or Computer Configuration that’s not configured, disable the node to avoid processing those settings. This speeds up startup and logon for all users subject to that GPO.
To disable a GPO node, follow these steps:
Open Group Policy Management Console.
In the console tree, expand Group Policy Objects.
Right-click the GPO that contains the user or computer settings you want to disable, point to GPO Status, and then choose one of the following options:
User Configuration Settings Disabled. Select this option to disable user settings for the GPO.
Computer Configuration Settings Disabled. Select this option to disable computer settings for the GPO.