@TP-Link_Deco I have tried this and I am not seeing E4 Deco configured as slaves getting more than 100MBPS speed.

I have setup M5 as my main router connected to modem with 300 MBPS speed, following my main router which is M5, I am using 3 E4 decos to form my mesh network. I get more than 200 MBPS speed when i...