My experience is also that between floors (circuits) you loose bandwidth. With latency I see no issue and I find that weird. Latency, with Wi-Fi or not, it’s

My experience is also that between floors (circuits) you loose bandwidth. With latency I see no issue and I find that weird. Latency, with Wi-Fi or not, it’s probably correlated with transmission failures so there probably some bad circuitry or devices than create noise (like electrical motors).