the desktop version of MG2 has a less secure gate than the iOS version.
the script here might be helpfull:
-MG2 can not differentiate between a finger-fret-release-note and a normal note. Only the veloctiy can help make the difference.
-Right hand muting instead of left hand liftoff is the classic way to avoid fretreleasenotes
- Fretwraps dont help for this issue: they only mute after the fretfinger is long gone from the ambiguous zone. fretwraps help to avoid openstrings triggered inadvertedly.