I've noticed that the WiFi power on easy mesh on 2.4GHz is reduced or impacted. Reverted back manually to previous firmware 1.1.3 and no longer have issues with distant 2.4GHz cameras by Aqara losing

Is there a way to only set the channel width to 40 Mhz? The 5 Ghz band is unfortunately crowded already. No dice with DFS channels too as although they're vacant, I live relatively close to an airport