Have checked the cables and connection which remain unchanged and undisturbed for years. Either gigabyte or Cat 5 and very short.
Not able to get settings etc from the Hub as the access 192.168.0.1 does not work - some months ago I switched off the Hub WiFi and and use the Deco booster. I believe that changes the access which no. I don't have.
Problem seems to have started with upgrade from 75/100? to 125Mpps some weeks ago.
SamKnows shows 137Mbps consistently but Device can be 70 and tonight as low as 35. I have also lost sound on streaming or it is broken up.
The online Virgin test shows peculiar results - sometime saying there is a local area problem and sometimes reset the Hub. Support on line said any local problem was to be attended to by 9am 30 Jan. Actually worse since then.
Have suspicions Hub 3 defective. But I am not detective!
Further advice requested