Two days ago I had BT infinity activated. The speeds have been excellent, maxed out the 80mbps rate of infinity 2. The max data rate was 132mbps when I first got it activated (which I know is excellent, this is since i'm only ~40m from the cabinet). This has however dropped to 122mbps since then (In only two days!) and the noise margin has also dropped. If this is dropping 5mbps a day, it will soon eat into my data rate. Is this normal? What is causing this?
I was one of first on my cab and had stats similar to your but this has now fallen significantly over a period of 2 years but my attainable is still above infinity 2 cap and noise margis is still above the norm of 6db my cab is now full and waiting for additional capacity
as long as you stay stable and above infinity 2 cap then your conenction is ok
it may still fall but you are closer to the cab than I am from your attenuation so maybe not much further and noise margin still very good at 14db