WiFiMan reports -85db and 80m when 3 floors down on the opposite side of the house from 1 Ubiquiti U6 Mesh. We have a second U6 Mesh to cover this area and user

WiFiMan reports -85db and 80m when 3 floors down on the opposite side of the house from 1 Ubiquiti U6 Mesh. We have a second U6 Mesh to cover this area and users roam between the two when on the second floor where we are most of the time. The house is detached, very open plan, and doesn't have many solid walls. We also have traditional wall radiators, I imagine the lack of underfloor heating and foil insulations allows wifi to travel further between floors.