Wow, "control"!? But that's illegal here!
In all seriousness though, it was by purpose that the rhythm is so chaotic. Random notes combined with long and varied delays make interesting ambient, with the emergence of patterns that change with time.
However, I recently noticed that when played on mobile, the melodies surprisingly follow a rhythm! This wasn't intended, but it does sound pretty nice. So I might try to reproduce it in an updated version, and implement it as an optional mode. :)
Thank you for your feedback!