if you forgive me for saying, but this forum has grown in to a mess of people posting endless "how I think MAX works" ponderings and only a few useful threads are buried 5 or 6 pages down.
Even then, there's only vague mentions of how to get through to a UK support centre as opposed to the Indian one
Typing "bt max speed cap" or "stuck bra"(!) gives no useful results. The only clear useful thread, Mr Saffron's feedback form, has become defunct because BT apparently don't read them anymore (!???!)
~*On topic*~
I sent a complaint from the "My Account" help section on BT Yahoo's site. Threw in info about the sync rate (though, whether the person reading it will understand a word of it....!). I'd prefer not to have to deal with phoning the scriptmonkeys at the call centre.
You will always get fluctuations in speed - it depends upon the time of day and how many other users are active that you are contending with. If you see low speeds whatever time of day then I woud contact support. As I said - good luck !!.
Im having the same problem.. I was on 2mb service prior to upgrading yesterday and regularly got 1.8mb download speeds... yet since upgrading my sync speed is 6.8mb yet my actual speed is only 0.5mb !!!!! not got a clue why or what to do about it.
I just called Bt and they told me its completely normal for this to happen until the 10th day after activation when the line speed will be set !!
How can it be normal for the speed to drop so much when i was already getting 1.8mb download speeds on my old service and now down to 0.5mb !!!
Anyway he said theres nothing he can do until after the 10th day and i should expect the speed to be up and down until 16th july. Just hope hes right because its been consistently been 0.5mb for over 18 hours now :-(