I suspect people are talking about many things...

1. The difference between sync speed and TCP/IP throughput
2. Loses due to how IP Profile operates which should be same as (1) on VDSL2
3. Loses due to how PlusNet implements its mirroring of the IP Profile and traffic management

You have an Up to 38 Mb/s service and the speed test you posted was 37.24 Mb/s single-threaded. I don't see any problem there either?

vimto - I agree there, but that was one of the better test results I have had in the last month or so (and for the benefit of others was via a Homeplug...) although I still cannot see why I cannot hit 40 with those stats and was trying to see if I could make changes to my install, but have been somewhat side-tracked by line length...

.34'ish has been the norm and the result that Plusnet acted on. Incidentally, I took out a '40/20' contract. not a 38/??

Mr S -
"I suspect people are talking about many things...

1. The difference between sync speed and TCP/IP throughput
2. Loses due to how IP Profile operates which should be same as (1) on VDSL2
3. Loses due to how PlusNet implements its mirroring of the IP Profile and traffic management "

Fascinating but no help? What about them all?

Edited by mikejp (Wed 06-Jul-16 15:25:52)

OK, your problem is not line length because your actual sync is enough above the artificial 40Mb limit that line length won't make any further difference at this point.

It also is very unlikely to be a BT Openreach issue, again because the sync is above the 40Mb limit.

That leaves it either being to do with the PlusNet IP Profile which you said is set at 40Mb - can you confirm it actually states that in the "Line speed" link that several other posters provided earlier in the thread?

Other than that it is something likely within PlusNet's control. Could be you are on a "hot gateway" but often a disconnect and reconnect would jump to a different gateway. Or it could be some contention kicking in.

As far as the 38/40 argument whilst PlusNet were using the 80/20 product rate limited to 40/20 they usually (and currently) advertise it as 38 because they can only advertise figures that at least a certain percentage of customers can achieve.

EDIT : PS - the speedtest you posted here is pretty much fine. I believe BT OR are probably confusing things by suggesting there may be something wrong with your line as it appears to be performing just fine from that result.

Edited by ian72 (Wed 06-Jul-16 15:44:58)

Thanks for clearing that up, Ian.

This is from that page
Estimated line speed:
57Mb (This may vary between 42.1Mb and 57Mb) - Checked on 2016-07-06 16:16:57
Current line speed:
40 Mb

I don't thnk BT/OR are 'confusing things' since the BTW test showed my line was 'underperforming, and as I posted, I was 'moved' due to a 'hot line'. I think it best I try the BTW run again and see if I can post the 'undershoot' details here?

Yes, rerun the test now that they have "fixed" it and see what it now says. If it is in the 36+ range then I would say you don't have an issue.

Cannot seem to be able to post jpgs, so here goes
Download speed 35.62
Ping 35.75

Diagnostic result shows red bar for 35.62 test and below
"the acceptable range of speeds 36.32-45.4
IP Profile 45.4"

35.62 is one of the highest the BTW test has produced, so maybe things are 'mending'?

That is because your speed is limited by PlusNet - you can't get to 45Mb because you are limited by PlusNet because of your package. BT will not know that.

In reply to a post by mikejp:

Incidentally, I took out a '40/20' contract. not a 38/??

I would guarantee you didn't. At best it was 40/19. And most likely 38/19.

Maybe, maybe not, Roberto, but totally irrelevant in relation to this thread. I WAS under the impression that it was 40/20, but would like a reliable 38. which is more relevant.