Glad you've enjoyed the game so far!
The animations should be fluid; I know there was an issue with webm playback on certain devices in the past but I was under the impression that was fixed. I'll investigate some more. Problem is I can't reproduce the issue myself so it's hard to tell if it still persists or not after any code changes.
I plan to have a Patreon release later this month; don't worry about donating and take care of yourself first and foremost! If you enjoy playing the game, that's enough for me :)