Are these dropouts confined to devices connected by wifi or do ethernet cabled devices drop out too ? What devices do you have? In Hub3 settings have you already disabled "channel optimisation" and renamed the ssid's of the 2.4 & 5 GHz networks?
-------------------- 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. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
Welcome to the community and I'm very sorry to hear that you've been experiencing intermittent connection. I'll certainly look into this for you
How has the connection been since you posted. Can you let me know if you are connected over wired or wireless connection? If it's wireless can you try changing the wireless channel and let me know if this improves things.