As I said, this is my first game. I'm sorry about the performance, but it's not like you have to play the game. It's just a small indie title, no need to be this harsh. Besides, nobody else here seems to have this problem, so maybe issue is on your side?
sorry I sounded a bit rude in my previous comment. as you said, the problem may be with my computer. I will buy a new computer soon, I hope I can play your game on my new computer :)