Herb,
Thanks for trying. You can not "freeze" Sonic. It is 16 channel VST synth. You can freeze the midi line in BIAB...For the sake of argument, I tried "freezing" the midi track (with Sonic) that did not work, because Sonic is not frozen it does not follow mixer "freeze" state smile but even if you (I) could, "freeze all" it would not help me. I use BIAB to arrange and experiment with tracks, so I do regenerate things often.

Jeff,
Good thinking, but still nothing. I have done some extensive troubleshooting and actually on one of the tests, I switched to "airplane" mode before even starting BIAB and on other test, while running BIAB+Sonic and distortion was happening. That did not help. I run tests clean without any external (usb) peripherals. Only interface plugged into the port.



My test results

As I suspected, running Sonic as a standalone and channeling midi through LoopMidi from BIAB worked just fine. I "regenerated" tracks in BIAB 10 times, I poked at different places in the chord grid, so it starts in random places. It works fine (No distortion!) Of course I can not use it like that, this was done only for testing. I (and all of the folks who tried to help here) spent quite a bit of time on this. I can say with great certainty that it is related to BIAB. I believe it is a good idea for the tech support to step in. I am out of ideas. (at least for now)

Misha.