Cool, thanks for the report! I think I gotta say that I can't support fixing the iPad (it would require an overhaul of the UI to figure out how to make the controls work without a mouse) but the fact that it's not running well on chromebook is concerning.
I'm adding the slowdown to my to-do list for the next update. It's been a problem for years but has been getting worse..... definitely one of those maddingly-hard-to-track-down bugs. 😅