As the person who was the OP in the thread that GonePostal linked to, I will be very interested to see how you get on. A quick caluculation suggests your IP profile is set at 92.3% and mine at 92.2%, so suspect a similar mechanism has come into play for both of us.

I only spotted the issue on mine as I am obsessive enough to maintain a Speedtest results spreadsheet and noticed my TBB download speed had dropped from ~73.7 to ~70.5 Mbps.

In reply to a post by garywood84:

Thanks flilot.

So it turns out that "Retransmission" is set to "Low" and error protection is "Off" - so I'm still not sure why my IP profile is only 92% of the sync speed...

Where did you get that info?

The line profile reported on a GEA test (an ISP test) reports a 13 day old profile.
So if this started in the last 13 days it wouldn't yet be reflected in a GEA test.

On a Broadcom (modem) chipset you can see if a line is ReTx Low or High via looking at the detailed statistics.

Bearer 0, INPRein = 0 is ReTx Low
Bearer 0, INPRein = 1 is ReTx High

Then there's what tommy45 reports, where the IP profile is calculated incorrectly by BT Wholesale.
This appears to need an entire circuit rebuild and is no guarantee it won't happen again in the future.

Edited by j0hn83 (Mon 03-Aug-20 14:10:44)