Audio playback time doesn't update every tick on android?

So I have this case where a sphere's size is determined by the music's playback time. It's butter smooth on my laptop but really choppy on my android tablet. However dynamically sizing this object with a dt-based math formula results in equally smooth transformations on both laptop and tablet. Anyone know about this?

I've confirmed that both laptop and tablet ran the game at 60 fps.

Thanks