40/20 fibre. Sync OK, speed test poor

I have 40/20 fibre and so far it's been pretty good after a couple of intiial glitches. The TBB speed test has usually given something like 37Mb/s down, 18MBb/s up. In the last few days the down speed has dropped to around 15-20Mb/s though the up speed has remained around 18Mb/s. All these with a wired connection to the same PC.

I've just pulled out the old HG612 modem and PN router and fitted a TP-LINK TD-W9980. Speed test results unchanged. I can now see the connection stats:

Current Rate (Kbps) 19999 79997
Max Rate (Kbps) 26209 81464
SNR Margin (dB) 15.1 6.2
Line Attenuation (dB) 13.1 12.8
Errors (Pkts) 0 0

So there's clearly no trouble with the VDSL conenction. I understand that the 40/20 service is provisioned as 80/20 but throttled to 40/20 at PN.

What should I do next?

what does this say for Current Line Speed https://portal.plus.net/my.html?action=data_transfer...

Just tried the PN test:
23908 down, 17685 up

That wasn't what I asked you to check

I clicked on your link and after I logged in it just took me to a list of possible actions on my account. I don't otherwise understand what you're suggesting.

At the moment I',m going through PN's troubleshooting routines using the BT tester.

Once logged in use the link I gave - you can't get to it via the normal route as they have hidden it

That's odd. When I click that link it takes me to the login page, and then after I log in it goes straight to the required page. Are you sure you didn't look at the menu options, rather than the page content?

OK, got there now:


Estimated line speed:
There's no speed estimate currently held on your account.
Current line speed:
40 Mb

That rules that out then so the fault route is the way to go

It's ticket 109678921 if any PN reps would like to take a look.