I added a mesh network to my house as towards the back, signal from the router is useless.

There is no opportunity to move the router closer.

I used to have homeplugs but speeds on the PC towards the back of the house were about 10Mb. My connection is 200Mb.

The mesh network is much better, easily seeing 160Mb out the back now on the PC.

The TP-Link Deco units only have two network ports for physical connection.

My Virgin Media router is set to Modem Mode, the Deco units look after the networking side of things.

The main Deco unit has one port taken for connecting the router and the other connected to my HTPC.

I've used the Deco out the back of the house to connect the Hive receiver. Both Decos never sleep and are always connected.

The boiler and the control unit that is wired to it (has two lights and a silver button) is on the opposite side of the house to where the receiver is. The living room, where the router is in the middle of them both.

Ever since changing to Deco units, the app seems to be very slow (takes over 2 minutes). Sometimes it will say it's offline and after the "up to 7 minute" reset, back connected again.

Can anyone help me understand why this set up will slow the app connection down? Or is it that the app has just got worse in recent months?

There may be an opportunity to move the receiver upstairs to the 3rd Deco but not sure if that will resolve the problem and it will not be the best solution as where that Deco is, we're running out of plug sockets.

Cheers