Attached is the .wav file, so you can hear what I mean. It is weird because some will play in unison while other won't.
I have zoomed in all the way, there is no difference in the times at which they start.
No effects on the mixer or anything.
I tried creating completely new patterns and putting in the same notes by hand (not copy/pasting).
I am using LABS Soft Piano, but I also tried with SINE Player's Ratio piano and got the same result.
Thank you.