I'm glad you like the game!
The slider you're looking for is this one:
I thought it only changed speed of arrow turning lol, my bad
When I played the game to check the slider, i noticed a weird thing with it. When you set the slider to a certain value and then go into the game, when you press esc the slider will stil be in the default position.
Hmm... that's a bug. I take note to fix it in the next version. Thank you for reporting!
