Thanks, I was going to ask if you'd tried the laptop via the Devlo homeplug and as you say 36.22Mbps strikes that out.
There's the DNS issue, manually give the DTR1000 a local address and give it the DNS lookup address that your BT router would use, which I believe are:
Primary DNS: 62.6.40.178
Secondary DNS: 62.6.40.162
If that doesn't help then there maybe a MTU packet mis-match size and if that's the case you're looking at Humax's support tomorrow.
Just to even things up talktalk will be offering a similar service to BT's youview, but using Huawei equipment. I'm still waiting to see how things pan out and then there's the HDR 1000S as well, crumbs it like buses.
Fingers crossed for tomorrow, hope Humax support shed some light on the situation