I have not hijack other user, it just my wifi mess up this speedtest. If I use ethernet direct the speed test show 74/19 if using wireless your speedtest are incorrect reading at higher speed. You can't blame me MrSaffron for these wireless does affect your incorrect speed.

In reply to a post by adslmax:

I have not hijack other user, it just my wifi mess up this speedtest. If I use ethernet direct the speed test show 74/19 if using wireless your speedtest are incorrect reading at higher speed. You can't blame me MrSaffron for these wireless does affect your incorrect speed.

Why post it on this thread though?

I assumed you were linking to a speed test by the OP or someone in this thread because.... well how is it relevant to this thread?

Precisely why I gave the warning for someone who has been here long enough to know the etiquette

So plus net have run sync speed tests and found no fault at 9:30am, i did clearly state that the sync speed always remains constant and there are no drops that its a throughput issue and that it only occurs after 8pm at night reliably. The ran a second speed test at 10:45am and found no sync speed issues (as i would expect) they have said the SVLAN is fine

At this stage they have booked an engineer to come out 1-6pm on Monday but again i have flagged to them that the fault only occurs after 9pm and asked them to include this detail on the fault report to openrach So likely i am about to pay a £65 fee because they cant run tests at the time the problem occurs. I am using BT Wholesales test platform and have emailed them over 15 reports on different days showing the issue.

So far i have plugged into the diagnostic/master socket, unplugged all devices from the router bar one (wifi turned off so nothing can connect), swapped ethernet cables, tried multple computers in different ethernet ports

Personally I would reject the engineer visit as likelihood is you will get charged when clearly there is nothing wrong with your line. As others have said it is either local congestion or congestion in the PlusNet network. It needs someone that doesn't just follow the script at PlusNet to pick this up and review the case.

Could be similar to the issue I (and others from multiple ISPs) had earlier this year.

See
https://forums.thinkbroadband.com/plusnet/f/4636449-...
https://community.plus.net/t5/Fibre-Broadband/Peak-t...
https://community.plus.net/t5/Fibre-Broadband/Moved-...

Eventually this was resolved after OpenReach enabled additional capacity between the cab and exchange although it took an escalation to the Openreach CEO to get it resolved.

Post your issue on the Plusnet forums the support is much better than phone support.