The TalkTalk rep was either being "economical with the truth", or simply ignorant.

Openreach give providers a choice of three stability options at order time. I get a bit mixed up between BT Wholesale on their service and Openreach as BTW also provide three to match up with those, with different names, but basically they both come down to Speed, Stable, or Super Stable.

AIUI BT choose speed. TalkTalk choose Super Stable. That way TT get fewer complaints about disconnections, which is the whole point of Super Stable. Also with the speeds being lower because of that setting the average throughput per customer is likely to be lower. So they save money and avoid aggro.

Why I gave you the earlier warning is that when you moved from TalkTalk to BT you changed product from whatever you were on to the Openreach 55/10 product. When that happens Openreach DLM is reset to let the line connect as fast as it can. Then after a day or two it can bring it down to safe speeds, subject to those three options.

The speed dropped each day. It's finally settled at 19.27mb down. I'm perfectly happy with that and it's faster than talktalk was giving me so even better.

The connection seems a lot more reliable and the wifi provided by the new home hub is a noticeable difference over the talktalk router I had.

I'm happy now. It took bt some time but they finally sorted it.

And I'm getting my £125 reward card too.

So glad to hear, the talktalk super router hg633 has some major issues, they should have never changed the hg635...

ps could the talktalk router do this?
https://www.youtube.com/watch?v=wTDb_mjti84

All good !