Welcome to our community and thanks for posting. Sorry to hear that you're experiencing slow speed issues, we understand the frustration this issue can cause.
We appreciate you trying several diagnostics as you have listed in your post, and we have a taken a closer look form our end here. We have checked the power levels and they are all within specification, there are no area faults affecting you currently.
Have you performed another speed test since your last post? As it been a short while please let us know if anything improved over the weekend with our services.
It's infrequent, but certainly there have been a number of cases reported here where the Hub 4 reports great speeds to the VM network, but output speed to devices is very poor with no obvious reason. Usually seems to require a technician visit and a swapout of the hub.
I'd suggest you initiate a formal complaint via the online form in My Virgin Media that you are not getting anything like the contracted speeds despite your extensive fault finding efforts, and that notwithstanding the hub's claim of a fast connection to the network, the fault has to lie with the hub, and VM are therefore not providing the service with reasonable skill and care (a statutory requirement under the Consumer Rights Act 2015). Demand that either they resolve the problem within 30 days, or they issue a deadlock letter to enable you to immediately escalate to CISAS the industry arbitration scheme, seeking compensation and either the fault being fixed or release from contract without penalty.
VM's complaints handling is as grim as the company's telephone customer service so don;t expect too much, but a formal complaint is a necessity if you do need to involve CISAS.
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