At Citrix Synergy 2011 in Barcelona we had a special session on new features that would be released, one of the features was HDX RealTime Optimization Pack for Microsoft Lync. Stefan Pieters and Martijn Bosschaart showed us a demo set with two XenDesktop sessions, on the session without the Optimization pack installed we saw the only vCPU spike up to 100% and the video/audio quality wasn’t really good but best practice is to use two vCPU’s instead of just one vCPU. The second XenDesktop session had the Optimization pack installed and we could see no spikes in vCPU usage but video/audio quality was impressive!