I was only experiencing this problem (or something similar) when using the Octatrack as my controller.
I spent the morning a couple of days ago trying different methods of sending midi through Hermod into the modular.
The Roland SH-01A was particularly good as a midi to CV controller.
As was the Arturia Keystep
These both worked great with MIDI and also with CV/Gate.
The Isla KordBot also worked well, and the Korg SQ-1 was also great.
However, the Octatrack was not paying beyond the first note. It was all a muddle and a drone regardless of the note (gate) length.
I talked with Squarp, and also with Elektron about it, and it turns out that certain sequencers send a note off value of 0 or 64 as velocity.
This was mixing things up in the Hermod.
As of Firmware v 1.01 this problem has been completely solved for me.
I am hoping it is the same issue for you.
- Try a different input device?
- Update to 1.01
- Take a look at your device settings - how is the gate/envelope set?
- Look at the Hermod sequence itself and make sure the gate lengths are not overlapping. Ie: zoom way out and make a series of 1/8 notes so you know that the voltage coming from Hermod isn’t the issue.
Lots to do. I hope some of this helps.