No change whatsoever on test socket.
Been with BT for 8 months (was on Sky ADSL previously). The estimated speed was 32 mbps.
But was that the guaranteed speed as I would expect the figure to be lower than your bottom estimated figure or at least others are always lower than bottom estimated speed
The attenuation looks higher than normal and the SNR is 9 dB so there is room for improvement
Can you run the btwholesale speed test and see what is the IP profile that shows?
Interleaving suggests the connection is reacting to errors of some sort. What make is the cabinet if you know?