Q:

Added AD Group to SharePoint 2013, how long do I have to wait to get in?

How long do I have to wait to access a site if I add a AD Group I'm in to SharePoint? I believe the time can be configured through Powershell. If that is correct, then how?

A:

I think it should be quick. i added a AD group into SharePoint group and its work like a charm.
But if you directly adding a AD group into SharePoint site may be take little time, I would close the browser / logout from site and re login.
only thing i know, is when you adding the groups it will cause the longer time for search crawl.
you can read about this over here. Clarifying Guidance on SharePoint Security Groups versus Active Directory Domain Services Groups
Another good article: https://sergeluca.wordpress.com/2013/07/06/sharepoint-2013-use-ag-groups-yes-butdont-forget-the-security-token-caching-logontokencacheexpirationwindow-and-windowstokenlifetime/

