Glad you like the swing animation. What stuff is broken have you found? I've just fixed the overpowered hit that happens randomly and you can restart with tab now.
It depends on where you hit the ball, if you're hitting the ball too late to the ground it hits low, try hitting the ball when its higher.
https://twitter.com/InfectedTribe/status/1453745341942013960
I'm still working on it though and I'll try to make the ball more consistent to hit.
