@Johnny_Luau,

Are the devices you seeing disconnected from the network trying to connect or send traffic through the network?

Is the behavior limited to what you are seeing on the client list, or are you also having problems getting the devices to connect while you are using them?

Are there specific devices you are seeing disconnect, or does it happen to ANY of your wireless devices on your network?

Many devices will "sleep" their wireless connections if they are not in use, so this may play a part. You may also look to see if the problematic devices have any sort of tracker blocking or private addressing features - they may be reconnecting, just showing as a different device and if names are assigned to the MAC or IP address, a conflict may be happening.

You may also try checking the WebUI for the client list to see if there are any differences or delays when using the app compared to the direct connection; its unlikely but worth a try.

I would recommend turning off the following settings for the problematic devices to see if one of these features is the potential cause.

BeamForming, FastRoaming, and lastly, Mesh Technology

These are some of the newest additions to the Wi-Fi protocol and may cause compatibility issues with devices that are not properly configured to support/deal with the function.