@ChrisAhlund Don't bother with blacklist: smart kids with modern mobile devices can connect to your WiFi with randomly generated MAC addresses, making blacklist useless. The only option you have is...

@Floob This is exactly what I've done at my house: configured Deco mesh, turned off WiFi on ISP Router and switched Deco mesh to Access Point mode. With Deco in Access Point mode you'll get maximum...

@Camand It depends: in my house, for example, quite long Ethernet cable connects my Main Deco to ISP router. ISP router is in the corner of the basement and I can't move it from there, Main Deco is...

@Camand Main Deco must always be connected by Ethernet cable to ISP modem/router.

@Sorin7559 Just Main Deco goes bad, right? I wonder if you have defective X60 unit, which happened to be Main Deco. To test that, promote different Deco to Main Deco and swap it with Main Deco. See...

@Floob Deco M5 is a good choice. I have two M5s (in addition to two M9s) and M5 will do just fine for your needs. In my tests, on my gigabit Internet, Main Deco M5 which is connected to Ethernet...