I just discovered that when I remote desktop to a machine that is hosting a Virtual PC and try to use the VM from the "player" then the user performance is terrible. You try to move the mouse pointer and it stutters which results in you spending 10mins just to trying to get the mouse-pointer to click a button! Don’t despair there is a workaround. Simply enable remote desktop access to the VM and remote desktop directly to the VM. The UI performance is fine, in fact you wouldn’t know it was a VM.