Thanks for playing! The jump delay is a really good shout, it would really help negate the feeling of unfairness that the jumping currently has especially when you feel you pressed to jump but the character just falls. I wasn’t able to play your game as I don’t have a windows PC.
Ok! HTML build on my game page works perfectly! You can try it now at https://itch.io/jam/mix-and-game-jam-2020/rate/822081 , just quickly! There's only 4 hours left!