Add user with <CFLDAP>: 15 seconds delay before appearing in the Active Directory

We are testing a new webserver: Windows Server 2012 Standard and Coldfusion 11

When I add a using <cfldap> it takes 15 seconds before the user appears in the Active Directory Users and Computers.

On our previous webserver, Windows Server 2003, the user appears immediately in the AD.

Is this a Coldfusion problem or a AD problem?