Welcome to our Community Forums and thanks for posting.
I am sorry to hear this. I have taken a look at your account and can see there are some downstream signal issues. I will therefore need to book an engineer for you.
I note that there is also an uptime of 35 days since you last rebooted your hub. We always recommend regular reboots of the hub to ensure you're on the least congested channel and to refresh the connection.
I will pop you a PM now so we can confirm some details and get the visit arranged.
Re: High packet loss + speed loss in south london area
a month ago
Thanks for confirming the details requested via PM @xPhilip
I have arranged an engineer to come out and correct the downstream power levels for you. Should you find the time and date unsuitable, feel free to re-schedule via your online account or give me a shout via PM.