MIDI offset / delay / latency
A MIDI time offset setting (per track) to compensate the delay that occurs when you control an external synthesizer from a MIDI track, and receive its sound on another audio track.
Advanced:
In addition to audio compensation, when you use the external synthesizer's arpeggiator, notes are often released with an step of delay.
Even if the clock goes well, the notes for the arpeggio arrive a little later and are released in the next step.
If we could manually force a clock offset for that particular track, we could alleviate that kind of problems.