Barry
After about 6 emails to Swann I finally got a response from Swann Support. Their brief email suggested that this was a bandwidth problem. However, as I connected the DVR directly to the computer without using the network and the problem still existed - I don't believe that this is the case. Out of curiorosity, is the net viewer software the same as the Video server e software?
Ps: Just seen your picture. That's exactly the same problem that I'm experiencing - albeit on a 4 channel DVR.