Touché can have a strange behavior, sending inconsistent / undesired messages, depending on your setup.
Touché MIDI Outputs (both USB and MIDI out) work as MIDI Thru. It means that MIDI messages sent to Touché are merged with the MIDI messages sent by Touché, therefore creating chaos if not properly set up.
Depending on your routing, incoming MIDI Messages can loop between Touché and your computer/synthesizer forever, flooding each machine's buffer with MIDI messages. This issue is called MIDI feedback.
Changing your routing in your DAW or connection options in your synth will solve this behavior.