I am using the Deco X20 3-pack, 1 is connected to the modem and the other 2 are connected via ethernet backhaul through a tp-link switch connected to the main unit
 

The Deco X20 frequently loses internet connection on all of my devices intermittently (around 3 or 4 times a day). The wifi is still connected (the SSID can still be seen and even shows 3 full bars) however it will not connect to the internet. Often the only way to fix this is to switch the wifi of the device off and on. The lights on all deco units continue to show a green light when this occurs.

I have tried testing the internet connection from my modem with a computer connected via ethernet and the connection is stable. I have only been using the deco for 2 weeks and did not face this problem with my previous orbi router.

I have also tried switching the main deco unit with the other 2 and the problem still persists.

My deco settings

Main network: 5ghz only (2.4ghz off)

Guest network: On (both 5gh and 2.4ghz on)

I would really appreciate it if someone can help me with this especially some of the tp-link people on this forum