Banding is extremely hard to get rid of. Weve seen people stuck on it for months.
Getting an engineer to do a full DLM reset appears to be about the only successful way of clearing it.
Ive only had a quick look at your stats but I notice you are showing amber for upstream for the profile which your ISP uses.
Also there doesn't seem to be much surplus SNRM atm to give you that much more speed. In fact your daily swing goes between 5.3 & 6.3 so nothing much to play with
G.INP is active and INP & Interleave aren't on so its not as problematic as it would be for someone on an ECI cab.