One UCMv2 and one on Windows 2012 and a fat and fast HP Server solely for One-X & VMPro.
I believe it is not the servers to blame, with my laptop it runs smoothly, it is the client PCs which are crap.
One customer with only four clients have Apple MAC PCs, brand new but Safari cannot connect and the Windows 7 pcs they have next to them are slow.
The other client have about twnty PCs, all Win7Pro but they are sooo slow, when I lift the handset the PC responds after ten to fourteen seconds.