I still don�t understand what you�re asking. Switching to another ISP won�t help your sync speed as you�re still going to be connected to the same cabinet, and port. Granted you�ll get a DLM reset but in all likelihood your speeds will just settle to where they are now after a while.

As I understand it (though we don�t have G.fast in my area so I�ve never worked on it), vectoring is always turned on with G.fast.

I completely understand the sync speed will be the same; it was more the consistency of the throughput near the sync speed, more so latency that I was looking to improve by switching to a smaller ISP.

The main question was around people ideas on how I could switch given OR doesnt have a live migration option, so it's a cease & re-provision or a new line. It was as simple as, are those my only options or did anyone know of anything else I'd not considered.

Why are you looking for a way forward with BT?

Should this not be down to the gaining provider to sort out?