I have had this issue for a long time and it seems to have gotten worse. I have a 1Gbit fiber connection. The ISP router is set to no be router and instead my main X55 i router. I have another x55 upstairs (mesh mode) wired with gigabit cable. Another in my wasing room connected via wifi to main router and in mesh mode also.

My Mac and AppleTV 4K is wired and have no issues. But my wifi seems unstable. My iPhone 16 Pro Max connects fine to 5G wifi, but the internet connection stalls all the time randomly. It does not seem to disconnect from the wifi, but the connection to the Internet is halted and then comes back after some seconds. VERY annyoing. Also, my Windows laptop (work) also has similar wifi issues on my network and my buddy has same if he tried with his iPhone. The X55 runs latest fw 1.7.1 and is set to reboot every night. I tried turning off beamforming and fast roaming (ChatGPT suggestion), but no difference.

Also when looking in the Deco app and seeing connected devices, I cannot my iPhone connected to any of the x55's?? I turned of the option to hide iphone on network on the phone.

At this point I dont know what to do or how to proceed with pinpointing the root of this issue. Any suggestions?