>> Just wondered if anyone could see why my profile seems to be stuck with a slightly high target s/n.
One thing Ive noticed is that quite often the banded profiles quite often seem to co-incide with an equivalent Target SNR margin.
Banding can be utilised to keep the target SNR @ 'x' db rather than the default 6dB and its something Ive seen on my own short stint into the world of banding that kept my upstream at 9dB. I believe theres some formula somewhere.
The main issue with DLM atm is attempting to get reductions made. Im afraid that due to time constraints Ive currently suspended by research into DLM, Ive stumbled across some algorithms on how the DLM decides to reduce parameters, but just not had enough time to try figure out what it could mean in the real world.
The other thing of note is your mention of NS who is also struggling to get a reduction made is that you are both possibly with the same ISP and we are not sure which profile they are using ie Speed or STandard.
