@David-TP thanks for the response.

Yes EE TV Box does support 5Ghz, but I cant disable 2.4Ghz as I have many other devices that only support 2.4Ghz. I have forced 5Ghz and a single AP in the Connection Preferences, but this did not make any difference.

It is challenging to go down to a single unit as they are in very different parts of the house. But as you will see from above, I did force the connection preference to manadate a single AP.

The Main Deco Unit is a XE75 Pro, is that what you mean? Or ar you refering the BT HomeHub 2, that I use to connect to the brodband only, there is no WiFi enabled.

With regards working prior to installing the Deco Units, I cannot tell you as the TV came after the Deco Unit....

If you read all the forums, it is clearly a problem with support for Multicast as there are several posts for this. EE/BT also state that their WiFi solutions support multicast for this very reason.

Does this help?

Scott

  @ScottG69 Hi, Did you fix this in the end? I got a set of XE75 Pro yesterday. They're in AP mode connected to a 'WiFi disabled' BT smarthub 2. I seem to have hit exact same issue with my EE mini TV box (main EE tv box connects ok, as does any other device in fact). Worked ok previously connecting to BT smarthub 2 WiFi

  @DB11 I gave up and just hardwired the devices, fortunately for me the devices were close to a Deco unit with a spare ports. I might try and switch to Wifi over the festive and see if I can make it work. Sorry I was not the answer you were looking for.