@TP-Link_Deco Hi Guys, thats what i ended up doing. m9plus as the main deco. two P9 cabled and the 3rd one by wifi. working flawlessly (from time to time i have to reset one of the cabled ones) but...

Hi Guys, I am having a lot of trouble with my 3 Deco P9 and 1 Deco M3Plus. The 4 decos have the latest firmware update. ISP connection is 500Mbps. House is 3 floors (garage, ground floor, 1st floor)...