I signed up for the 1Gb conection and fitted the hub 4 yesterday. I am using the Ubiquity Dream machine pro (UDMP) as a router. On the 200Mb connection that I had previously, I was getting 212Mb through the wireless AP and the UDMP's own speed test. On install i was getting 850-940Mb on the UDMP. Now i am only getting 70-90Mb. Rebooted everything, but has only brought it up from 50-60Mb to my current speeds.
With the same cable or other cable you can use to connect the UDMP to the hub have a PC to the hub in modem mode and do a speed test and if you can get the MAC from the UDMP and put it on the PC to see if you get the same WAN IP.