Have a 3 Eero Router system with the one router in the kitchen, to reach the outside patio. In the kitchen I get 150mbps.   Outside on the deck, literally no more than 10 ft away, separated by the homes exterior wall, I get around 30-35mbps.   Normal, frame nd aluminum siding home.   Is this normal?  I don’t remember getting such slow speeds before with it.   Was there a firmware update? That much speed decrease, although usable, is pretty bad given the circumstances.