My QCY bluetooth headphones keep connecting to my mbp in Slave mode for some reason macOS has issues playing audio when in slave mode. Once disconnected the device reconnects in Master mode. This Hammerspoon script watches audio device events and uses blueutil (toy/blueutil) to quickly disconnect and reconnect the device if its in slave mode.

init.lua

hs.audiodevice.watcher.setCallback(function(evt)

    if evt == "sOut" or evt == "dOut" then
        hs.eventtap.keyStroke({}, 'F8')
    end

    qcyMac = "00-00-00-00-00-00"
    devices = hs.execute("/usr/local/bin/blueutil --paired | grep -i qcy | grep -i slave");
    if(string.len(devices) > 0) then
        hs.execute("/usr/local/bin/blueutil --disconnect " .. qcyMac)
        hs.execute("/usr/local/bin/blueutil --connect " .. qcyMac)
    end
end)


hs.audiodevice.watcher.start()