There was one time at a menu where controlls stopped responding and I thought that was the problem, but now I think more likely the game had just happened to freeze when the menu was up.

It has frozen more than once bad enough that it had to be force closed.

I don't if that was just bad luck or if it would be like that throughout the game, because I decided to refund.

The framerate can drop massively to where you can't do anything, and it doesn't seem to recover when that happens.