I bought a new 2018 MacBook Pro with Touch Bar. I am experiencing Bluetooth issues such as my Magic Mouse disconnecting randomly and lagging. These are the steps I have taken (not in the order as listed here) though I am still experiencing the dropouts. Any other suggestions?
Removed Bluetooth devices from existing connections.
Clean connectors from mouse.
Remove and reconnect Bluetooth devices.
Unplugged USB-C hub to avoid interference.
Renamed my Bluetooth devices.
Removed com.apple.Bluetooth.plist (whenever the Bluetooth is about to cut out a copy of
com.apple.Bluetooth.plistis created, not sure if this means something).
[Edit: I have had my Bluetooth antenna in my MacBook replaced and it is somewhat better, though, still not fully solved]