Virgin can and will activate a SH2AC on your account, Just phone them up and hound them. Explain your connection isn't suitable for purpose and that they have supplied you with faulty equipment (the SH3). Thereby failing in the contract to supply the service they are selling you.
Yes, I must limit what I say as I get 'warned' regularly.
Go and open a case with Cisas, explain that the Intel Puma 6 chipset is causing unacceptable lag and in the 2 years that Virgin have been using the Hub3 (note testing before public roll out) - in the customer testing it was identified as an issue to them and they've chosen to do nothing until now, and I feel the ONLY reason they're doing soemthing now is because customer numbers are dropping and obviously somewhat rapidly for them to be actually rolling it out, or rather 'testing' it with 350mb customers.
anyway Cisas have to my knowledge sided with the customer when its involved the hub3, you will be required to give virgin media 8 weeks to 'fix' this which its unlikely that they can or they'd have made some public statement about it, either way, it won't cost you a penny, and as long as the outcome is favourable to you which they more often than not in these situations Virgin agree to be bound by their ruling which is either, 1. Termination of contract with no penalties, 2. Recoup some cost to you as they're not providing the service they've sold, and a last option which I think we will see more of until its widely spread, 3. That they will force the firmware update to you to try and make it looked fixed, which until I've seen someone I believe as an authority on the forums confirm that its not just moving ICMP ping to another chip thereby hiding the problem, I'll believe that thats what they're doing to act as a placebo and then they can say WHAT latency and packet loss....
It doesn’t look good tbh why the hell cant they just admit that they have the problem instead of blagging it I’ve pulled my hair out over this for the last 18 months in away I kind of feel relieved it wasn’t just me going mad . it has cost me a fortune in new equipment and endless hours of fault finding just wish I suspected the super hub 3 from the start