Let me start out saying that we are a new customer of Zoom from Cisco. The Zoom appliance rocks but we have some crazy issues with lag and settings that we never had with Cisco WebEx Calling. We have been told to update Polycom firmware, we were told to open all ports on the firewall inbound and outbound, we were told that fixes are coming for the issues that tickets were filed for. We have had no luck on this. The lag does not happen with just Polycom firmware. When you add the ZDM with Zoom 5.9.4 onto the Polycom CCX 600 or 700 it will eventually delay to the point where it lags or not usable. Does anyone else have these issues? So far it does not matter what firmware you run or Zoom app version you are running. Hopefully there are some Zoom engineers here that see this.