I´m not sure if I´m following you here.
Are we talking about MIDI control of audio tracks or about MIDI control of external gear (with OT MIDI tracks)?
Are you sampling the external synth, and/or just route its audio thru your OT? Is the OT controlling your external synth (via MIDI)?
Does all of this happen if you startover and create an new project?
[/quote]
I have experienced this phenomena as well. When Midi sequencing my Sub Phatty from the OT and running the Sub into a Thru track. Basically, I turned off the OT and went to sleep, then woke up and turned on the same project, same settings on everything and bam wtf???
It sounded like an LFO had been added somewhere, but none had. It was basically a low-speed volume wobble, that just made it sound like bad automation had been applied where none had. I manually turned off every effect and LFO in the project but still couldn’t get rid of it. I also tried assigning new thru tracks, and copying the sequence to another midi track as well, to no avail. I also verified it wasn’t the Sub P.
My only eventual ‘workaround’ was to literally give up on the project and start over. I never figured out what the real problem was, chalked it up to not fully understanding the OT yet, and moved on.
It sounds like the same problem, so I thought I would mention it. It hasn’t happened again. I have not experienced the scene problem, either.
@OP-I hope you get it working before your gig.