Get Trax is a Max For Live device that auto splits Drum Racks to separate tracks.
Requires Ableton Live 10 Suite or Ableton Live 10 with Max For Live as an add-on license.
Ableton Live 11: Get Trax can be used in Ableton 11, but it does not yet support the new note data such as probability and velocity deviation. If you do not have such note data, Get Trax works as usual. There will be an updated version of Get Trax that fully supports Ableton 11.