Magic Mouse disconnects macOS Mojave (MacBook Pro 2018) 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.
Turn off and on Bluetooth and Wifi.
Remove Bluetooth PAN from network interface.
Have fresh batteries.
Remove the cover from the mouse.
Put a piece of paper between the batteries and the cover.
Clean connectors from mouse.
Debug Bluetooth.
Remove and reconnect Bluetooth devices.
Disable Handoff.
Reset NVRAM.
Restarted in safe mode to isolate issues with your Mac.
A combination of disconnecting, resetting NVRAM, safe mode, and pairing.
Unplugged USB-C hub to avoid interference.
Checked for metal objects and 2.4GHz interference.
Renamed my Bluetooth devices.
Removed com.apple.Bluetooth.plist (whenever the Bluetooth is about to cut out a copy of com.apple.Bluetooth.plist is 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]
Updating Xcode has limited the disconnects from the keyboard and Magic Mouse (still not perfect but much better).

To update Xcode, open your Terminal and enter xcode-select --install. 
You may have to delete the old version of Xcode before installing the latest Xcode. Make sure to also install the command line developer tools.