The Ubiquiti APs really are the key here. My household had the same problem with the various makes, models, etc until we switched there. For wifi, we use a mini

The Ubiquiti APs really are the key here. My household had the same problem with the various makes, models, etc until we switched there. For wifi, we use a mini-itx box running pfsense and it works fantastically. If you want reliability, you need to not use consumer gear, period, because it's all crap.