Client tried migrating a LOB app today from SQL 2005 on 2003 to a SQL Express 2014 install on 2012 R2 (newly setup). All workstations are pretty new Win7 systems. While everything seemed to go fine, the database connection for the LOB app is EXTREMELY slow from all the client workstations EXCEPT the RDS server (which is a Hyper-V VM on the same server).
So we backout and restore the old server... now it's reversed - ALL systems work great EXCEPT going back to the old server from the 2012 (non-R2) RDS server. *IF* the RDS server hadn't worked fine this morning, I would be thinking it's the switch... but it did work fine this morning...
Have looked for a bad patch 2992611 (if I remember the number correctly; it's not installed). I have disabled LLMNR. Have gone through the NIC properties on a Win7 client connecting to the new server and...