We are using the Vizia RF + Installer Tool v188.8.131.52 and the Hop Count and Link Quality Function shows N/A under the Link Quality. Why doesn’t it show Link Quality? See attached screen print. It would be useful if this function could be a printable report.
Try performing a network rediscovery at -0dB to see if that helps. It seems as though you have very high hop counts for many of the nodes and this could possibly be creating a busy signal on the USB stick causing it not to finish the link quality portion of the diagnostic.