NEED TRILL SPEED CONTROL
I'm guessing that trills default to 32nd notes. When playing the score at a faster tempo this results in something that sounds like a machine gun. A speed control for trills - either as a local property, a score property, or a playback panel property would be useful.
You could do this a few ways:
a.) Choose the note duration: 32nd notes, 16th notes, etc.
b.) Choose the total number of notes played for the trill: 8 (4 down up pairs), 16, etc.