Changing while you write sounds surprising. All ink engines have some amount of retroactive smoothing going on, but typically (and this is the same for Muse) it should only be the last 50ms or so of data, and often that part is still hidden by your hand or stylus tip.
Example handwriting in Muse: https://media.museapp.com/website/2022/how/write.webp -- sounds like you're not getting results like this?
If you feel like it, send a screen recording to [email protected] and we can try to debug potential problems in the smoothing algorithm.