I bought a AX90 to help with coverage. Live in a 3 storey town house - router on middle floor - coverage in the downstairs office is intermittent - hence the AX90, which made a big difference (concret

I live in a three storey with the office on the ground floor. The routers and connections are on the middle floor. The wi-fi in the office (I think due to the concrete roof in the internal garage was