williamambrose – 2 hours ago  » 

I’ve factory reset twice and with my theatre system. All my other devices in my bedroom are connected to the WiFi. I’ve also factory reset the main router.

Doesn’t the TP link device have a network socket you can connect to ? Can you post the model number ?

williamambrose – 3 mins ago  » 

Yes I’m using the Ethernet cable now from the TP-Link

And you have a similar unit at the router end connected to the routers network switch with a network patch cable ?

williamambrose – 15 mins ago  » 

Yes there’s another device which is connected straight into the main router via Ethernet.

In that case you should not need to use WiFi. It should connect with a direct cable connection.

williamambrose – 35 mins ago  » 

The only reason I wanted to use WiFi is because there’s no plug socket close enough to my set top box. So I’ve run an Ethernet cable around my room from the tp-link as I didn’t want to plug the tp-link into and extension cable.

That should work but a lot will depend on if your Router and the location are on different ring mains. If not signalling through the consumer unit will degrade the available speed. In the end running network cables will always give the most reliable connections.

williamambrose – 2 mins ago  » 

I’ve completed speed tests and i get 80mb so I’m happy with that

That should be fine. It should be 80Mbps (80 megabits/second (or about 1 1MB/second.

On the face of it there should not be an issue. Power cycle the router. Clear the cache on the box, to ensure it’s not using old saved settings.