You will need to check on an ethernet cable connection or VM will just blame it on wifi interference. You can get 20/50 metre runs for less than a tenner and just trail it over the floor whilst you run the tests - and then roll it up and put it in your bits drawer.
But.. it does sound like a wifi only issue - and the ethernet will confirm that.
If it is a wifi only issue, then on a Hub3, you can try separating the SSID's of the 2.4 and 5 GHz wifi bands by renaming them in the settings and at the same time switch off "channel optimisation" apply and save the settings. All wifi devices will need reconnecting to the best SSID at each location. Also use a wifi scanning App to find the best wifi channels to use (just select and use channels 1,6,11 on 2.4GHz) - this often helps Hub3 users get better wifi performance - but its still no substitute for getting better kit
🙂To address the wifi, VM now supply “wifi Pods” (no longer doing “boosters”). Pods are free to customers on 1GB or Ultimate Oomph packages - is that you?
If not you will be charged £5/month. Its a simple solution and should work for you. However, you would soon pay off that cost by buying a "better" wireless solution that will be yours to own and use forever but it isn’t the simple plug and play option of the Pod(s).
Get either a… (1) Mesh System, (2) Wireless router, (3) Wireless access point (4) Powerline adapters, (5) A combination of (2,3,4).
--------------------
John
--------------------
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.