Hello,
I have Widows Server 2008 R2 with all the latest updates installed and running inside ESXI 5.1 I am having some serious issues with lag when I remote desktop into this station. It seems as if screen is not refreshing fast enough. I am experiencing this issue both on LAN and WAN. This morning it was so slow my screen literally froze. After I have restarted this box, it started to work fine again. I noticed that I have to restart it every 2 days in order to fix this issue. I know there are a lot of threads with the similar issue but nothing seems to help here. I see no errors or events that can pertain to this problem on both Windows and ESXI sides. My CPU and Memory are running very low so doubt that's the issue. IPv6 has been disabled on Windows station.