Hi StavEllis,
Thanks for the reply and confirming your details, I appreciate it.
I've taken a look at your line, the hub and the network and all is showing as fine. The power levels are within range, there are no faults reported and the traffic on the network is running low, which is good.
I appreciate all the checks you have completed so far and the engineer appointments you have had to try and fix this for you. I would like to just start from scratch and complete speed tests at different times of the day whilst the Hub is in modem mode please? When using speedtest.net, make sure that the default server is selected and try to post the link/screenshot of the results (without the IP address showing).
I understand how frustrating this is and I would like to find the cause of this for you.
Speak to you soon
Sam