A speed test http://www.thinkbroadband.com/speedtest and post the results link might help...

e.g. if the tbbx1 test is slow and graph bumpy it suggests an issue, particularly if httpx6 is a good straight line

To know if its the Wi-Fi you need to test on another device that has Ethernet.

Some devices have a tendency to hop between 2.4 and 5GHz, so suggestions to name the channels differently might help e.g. I've done this and the phone only knows about the 5GHz credentials to stop it wandering around

Also different routers have different antenna so it sounds odd but rotating or moving the router a little might help, i.e. finding optimum orientation for where you use iPad the most.

Another possibility is that with older iOS the iPad was happy, but there have been versions of iOS where people have reported issues after upgrades so its possible that the Wi-Fi is fine and the iPad is playing around.

Correct.

Thank you all.
I have just followed the instructions and spilt the bands, then changed the channel for the 5ghz.
I will see how it goes.
Cheers!

Edited by ck2 (Wed 04-Oct-17 18:41:39)

Speed test result:
https://www.thinkbroadband.com/speedtest/15071389537...

I hope I am not speaking too soon, but it seems to have sorted the issue out.
Excellent. Cheers!

Great!

Fab! The smart hub shouldn’t be any worse that’s for sure

I split the bands out of the box nowadays.

I didn't notice this yesterday.
In the list of WiFi network available, I now have the network as it was before, but also an additional network with the same name but with '-5' at the end. Which should i choose?

The -5 one is faster but at further range the signal may be lower than the other network, and hence it may cause the buffering you experienced at a distance.

Your sky hub likely did not support 5Ghz at all, so would have mirrored the non -5 network.

The 5 GHz (-5 one in posters naming) should be less prone to interference from other neighbouring networks too.