Strange result. No Roto Control here, but lots of MIDI control sources. On a 2nd read, I realized you’re targeting PolySynth (and not the HotSawz or Stutter algos I tested successfully first).
I’m not seeing that behavior. I tried both direct CC mapping in Eventide Control, and using Learn on LFO Dest in the H90. Used the same testing process for the H9 Gen 2. I set up maximum LFO Amount with a Square waveform for the most contrast, fed by a continuous CC1 message.
In any case, the LFO Dest moved through selections both visibly & audibly here. Any chance you can try an alternate MIDI source to the Roto, to eliminate that as a possibility? It shouldn’t matter, but what CC Number were you using?
