New Customer: From 37mbit to 8mbit

[#1]

I have experienced a flawless service until today... 😛
PlusNet-
Estimated line speed:
   21Mb
Current line speed:
   37 Mb
I usually get 36.9Mb in real world downloads!
Download: 36.9Mb
Upload: 7.2Mb
My router and wireless hub are all located downstairs directly connected to the phone line.
I decided to move the route/hub upstairs so that I would not have to use wireless. I used an extension cable for the DSL line.
Upstairs Extension Cable Setup-
Download: 21Mb
Upload: 5Mb
^This was slower than Wifi so I decided to move the router/hub back downstairs, and directly into the telephone line.
Now here's my current wired speed:
Download: 9.36 Mb
IP Profile for your line is - 38.72Mb
So, my speed has reduced from 37Mb to 9Mb. I have returned everything to the same set up I was using before, yet no speed change.
Also, is PlusNet throttling me to 38.72 Mb? As I'm hitting this speed on downloads I would like this limit removed or moved higher if possible.

[#2]

Hi there,
There's no obvious issue looking at your line and settings.
Are you able to try a PPPoE connection?
Once we get your speeds sorted we can look at changing you to the 80/20 product to see if this helps.

[#3]

Hi,
The speed issue sorted itself. It fixed itself and raised the sync speed back to 38mb after one hour or so.
Would it be possible to try the 80/20 profile?
I'm currently hitting the limit of 38-39Mb when connected on a wired connection.  
Adie:quote

[#4]

You'd have done far better to leave the modem connected to the master socket and then a long Ethernet cable to the router upstairs. That arrangement would guarantee no loss of speed unless the Ethernet cable was more than 100 metres long.

[#5]

Yes, I ordered a 30 meter Ethernet cable from amazon a few days ago. This is my plan

Quote from: jelv

You'd have done far better to leave the modem connected to the master socket.

Added the long ethernet cable: