Tiffy have you tried to drop your PPPoE session on the router for 20 or so minutes and then start it again to see if this changes your IP Profile.
Update to an old post:
I chose not to take NS & j0hn's advice to drop the PPP session accepting my approx. 91% data throughput ratio was attributed to a retx high profile.
Yesterday I changed out my Netgear router for my newly acquired ZyXEL 1312A router leaving the Huawei HG612 modem active maintaining line synch, this involved dropping PPP session for quite some time while I figured out the necessary settings for the 1312 running in router only mode.
On running BTWS line test today, noted that my DS IP profile had increased from 34.84 to 36.99 Mbps, my DS synch. was still the same @ 38.256 Mbps, DS data throughput ratio now 96.68%, was 91.06%.
Noted that my SK White Box records had also registered a step increase in DS data speed between the 13:00 and 18:00 hrs. readings yesterday, corresponding to the time of the router change out.
MDWS trends do not show any step changes in any parameter over the router change over period, as modem synch. was maintained this is to expectation.
So, looks like the drop of PPP session as advised did update the DS IP profile, good result.
For future reference, when I pension off the HG612 and connect the 1312A in modem/router service, is there any easy way to drop the PPP session without loosing line synch, I am lucky enough to have a very stable line which very rarely re-synch's by DLM intervention, usually only by local power outage or manual action.