Does the problem persist if you reboot the Hub? Where is hub mounted? Have you tried other locations?
Occasionaly the hub will connect to a "bad" IP address with terrible speed and latency issues, rebooting the hub has always resolved the problem by connecting to a different IP address, This has only occurred 2-3 times in the last four months.
Some other users are suffering from the hub dropping internet connection and not automatically reconnecting but I have experienced this issue.
