Having this same problem. Still..
Confirmed, improves it for me too. Noticed quite severe input lag/delay here and there but not constantly. I realized that it's the new notes which I create on this desktop client which lag (I work on multiple machines.) Hence, closing the note and letting it sync then continuing work on it helps a lot. Somehow not 100% tho. Comparison gifs: New note, not closed Note, closed once System: Win10 i7 16gb ram