For a little bit of context, I'm using teensy 4.1 with PlatformIO. I tried modifying the USB_MIDI_AUDIO_SERIAL profile to work with dual usb so I wouldn't have to touch the audio mapping. I just added the cdc2 interfaces and endpoints on to the...
Thank you for the pointer about Serial.send_now(), that definitely was the software issue. I had a sneaking suspicion it would be a one line fix to my weeks long struggle lol. It turns out in addition to that, some of the port holes for the mics...