@TP-Link_Deco Thanks.. I had updated the firmware last Saturday.. so far use it until now , the disconnect is still acceptable... Mean currently is only disconnect 2 to 3 times a day per device.....

@VCL I actually I don't understand why we as a TP-link customer that bought the M4 Mesh WiFi , we face the problem and we need to help TP-link trouble shooting? Like this case may not too many person...

@VCL Many years ago i bought few wifi router for office use, after use for few week the tp-link products keep going to having problem.. I send for warranty claim.. after change the unit from RMA dept...