So when I connect a USB keyboard or external chord sequencer and initiate ARPEGGIATOR as an effect, the notes input are doubled.
Example - my keyboard is sending C-E-G but the audio is playing C C E E G G when I am inputting the notes. When I play back, however, it is playing C E G C E G C E G (as one would have expected to be the case).
FW 1.61. Arturia Keystep and Vector Sequencer used to test (independently of each other) connected to the Hermod.