Downstream data is not fully complete, however overall power and MER levels are good to excellent.
Unstable Wi-Fi has several potential causes, most commonly excess attenuation due to the signal passing through too many walls or interference from other access points in the vicinity (neighbors).
Power levels for both downstream and upstream should provide sufficient headroom to move the SmartWifi modem back to the living room, which may well resolve the Wi-Fi stability issues. The living room outlet should be replaced with this setup, but you can definitely try it out.
Renting one or more SmartWifi pods is another option.