I can adjust the power but this is a blanket adjustment so will keep as it is for the minute. I can also adjust the rssi value as well. This is currently set to -70dBm I'm not sure which direction this should go in. My S21 is currently up stairs and linked to the main router downstairs with a -71dBm. I should be connected to the node upstairs which is way closer.Try reducing power level on the ground floor AP. And if you can set a rssi value in the client or the AP to drop the connection.