- same Deco, yes; because there is only 1 Deco in this network

- mesh technology; turned off but does not help.

- let me try the reserved IP. But may I know once a device has a reserved IP, does it means it will stay on the same frequency?

thanks for the further information. Will definitely try it out.

One question: may I know in the Deco, in the main network (not the guest one) is there any AP isolation / client isolation?

I have another home has Deco M9 Plus (2 M9 plus devices in the same network) and never have the similar problem. But now even one X90 has it.. so I wonder if internally in the X90 segment / isolate the client.

I can check by doing some port scans but i think your information will be more reliable.

thanks!

  @Momcho I can feel your frustration. I have M9 plus in another home and it did take me quite some time to resolve similar issues. e.g. the first few months the Dyson Link never work in that network.

I have no experience with other mesh solution so I am not sure if that is the problem of TP-Link or the protocol itself.

I have a similar problem. 2 x x90 Deco routers covering my large 2 storey home really well, everything's connected and FAST. But trying to cast from my Pixel 7 to some of the devices on my network can be a huge pain, they just don't show up as cast devices. This includes some Google Home mini's (we have 9 of 'em), and most of my Google Chromecast/TV devices. Some show up as castable, others just don't appear.

If I factory reset the device sometimes I can then see it. In one case on my main TV, nothing would work. In frustration I uninstalled Google Home from my phone and re-installed, and the main TV now shows up as castable.

I've just turned "Mesh Technology" off on all the devices that don't move. I have Fast Roaming enabled on my Deco network 'coz I want our phones to take advantage of that tech as we move about the house, but if the issue continues I'll try turning that off.