Device jumps between decos even if associated to a specific one
I have a device that I put under my iot network and looses connection continuously. I followed suggestions on support page, I so let the network open to be sure it wasn't a security issue, but nothing changed. I found that the device is switching between two Deco's, one is far and one is closer. I decided to associate the device only to one deco, disabling the mesh support for that device, selecting a specific deco and putting connection only on 2,4GHz (I don't really need bandwidth for this device). But despite this setup, the device is still switching between these two Decos. How can I solve this? Thanks for your help, Matteo.
P.S.
The two Deco's have been purchased in different times and, so, have different fw. No update is available.