Until today I have been using just two tracks (Seq 1 and Drums) and everything works perfect. But today I added another synth to the Seq 2 and suddenly Seq 1 got stuck notes and strange pitch changes. It just happen if I use the 3 tracks (they are in different channels), I can reproduce the problem everytime I use the 3 tracks.
Already verified cables, channels and connections. No matter what, add the 3rd track and get stuck notes on track 1, every time.