We have been battling with a Windows Server 2003 R2 machine that works fine at the console, but has lag issues when remoting to the machine.
When remoting to the server we can wait from 30 seconds to five minutes before the logon screen appears and/or we get to the Desktop. It is very random on how long we have to wait, sometimes it will get to the logon screen quickly but then we sit at a blue background screen for awhile until the Desktop loads. Other times it is the reverse. It also takes very long to logoff the machine when remoted on.
There is also a noticeable lag right after the connection is made and the screen is being drawn. The screen is drawn in horizontal blocks and can take sometimes 20/30 seconds just for the entire screen to appear.
From the tests that we have run, logon time is perfect when sitting at the console, we only see the lag when remoting on to the server. The lag only occurs pre-login or when we are at a login screen (ie: screen is locked). After login there is no noticeable slowdown. I also tried to watch the processes on the machine as users login and nothing seems strange.
No other server at that location has a similar problem, I've tried comparing RDP settings between the laggy machine and another and they were identical.
Is there anything else we can try?