If you don't need to utilize Group Policies on the local machine, you can disable parts of it. This will dramatically speed up the login process.
Login as Administrator.
Go to Start/Run type in gpedit.msc and click ok.
Right click on the Local Computer Policy entry and select Properties from the menu that appears.
Add checkmarks to the two options within the Disable section. Close out.
Notice the login access time has decreased dramatically.