Have you tried setting your transmit power low (just enough to get good signal to the places intended, but definitely no more than your devices can trasmit) and

Have you tried setting your transmit power low (just enough to get good signal to the places intended, but definitely no more than your devices can trasmit) and increasing the minimum send rate to something reasonable (say 10-40 Mbps, beacons use minimum rate)? It should help high power bad signal (some devices use fixed thresholds) and equalize the beacon vs. data reception quality. I don't think openwrt had data rate config in webui, but it does support the setting in the config files (that I normally scp onto a device). The following seems to work: /etc/config/wireless: config wifi-device 'radio0' ... option txpower '1' << 1mW (more than enough for 1 room) option legacy_rates '0' list basic_rate '24000 36000 48000 54000' list supported_rates '24000 36000 48000 54000'