@Akshayaa Just received a replacement unit from TP-Link, I didn't upgrade the firmware, but still having the same issue. Looks like this model or none of the firmware are working as described.

@Akshayaa Any idea when is the new firmware coming?

@Tony The units are 10 feet away from each other, they are all placed in my house..only the main deco is connected using the cable, the rest all using wifi...when all units are working without issue,...

My Deco X20 I just purchased keep rebooting, in 1-2 hours, all units automatic rebooted 4-5 times...Contacted support using live chat and emails.... tried many suggestions, like changing the slaves...