A lot of posts are appearing regarding this in the other fora. I suggest you look in "Networking and WiFi" - and post in there with specific details of your issue.
Also, in the meantime. Set up a free “Broadband Quality Monitor” to continually monitor the state of your connection and record any true network dropouts and disconnections - it will thus allow you to differentiate between those and simple "wifi" dropouts. It does it 24/7/365 and it keeps a visual record of any/all of your network disconnections, useful data to have to match to the Network logs (in your Hub settings) and also in discussions with VM. If you just see a wall of "red" then your Hub is not accepting the "pings" - make sure you uncheck the “ignore ping from WAN side” box in the settings - note it will take an hour or two to start seeing a sensible picture.
I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.