it is wise to use a song speed value divisible by 3 in order that the arpeggio sequence can loop smoothly.
only a handful of Spd/BPM combinations result in song speeds that are synchronizable with modern sequencers.
Speed Line notevalue
24 1/4
16 1/4T
12 1/8
8 1/8T
6 1/16
4 1/16T
3 1/32
2 1/32T
1 1/64T