In my personal set up at home I get roughly 37mb download in my bedroom have no issues with the connection on the set top box via Wi-Fi.
If you wanted to see if the power line extender is working it might be worth trying to connect a different device to the extender using an Ethernet connection and then running a speed test, with this you should get the maximum speed that you subscribe to
Are you able to use features that require the broadband connection such as Netflix and YouTube etc..?
sorry about delay ..took me ages to work out if TP link AV device was working and how to reset ...it was still connected to old router name. The utility and instructions I found very confusing as no clear instructions. Now have extender downstairs near TV and speed test shows 80 when wired and only 35 / 40 through wifi. Not sure if have Netflix or youtube ...how do I work that out please ?
I guess my next step is to set up V6 when I get a few hours.
I have to make a call first ...and then sort box immediately ? if not to be left without TV ....so I want to be sure it works first time .
There isn't usually a problem. Call to activate the V6, connect it to the coaxial cable using the IEC connector and plug in the Ethernet cable. You can use the existing HDMI cable for the TV connection. It may take a few minutes to download and install any software upgrades and the EPG. Once it's working you'll find the apps such as Netflix and Prime Video (require subscriptions) and YouTube.