Thanks for taking the time to write this comment! I appreciate your eagerness to play and I'd like to fix the demo for you, however, I'll need more info. I haven't seen this issue before. Can you post a short video or screenshot? Does everything move fuzzily, or is it just the background? What is your screen resolution? Could you try playing the game in windowed mode as a workaround? (There's a full screen setting in the menu). Please let me know how it went. Thank you!