Hiii Johnny, Thank you so much for playing and taking the time to provide this invaluable feedback. We are working on remaking the whole game and will take all your suggestions into consideration. This will help us a lot!
The lagginess you experienced is due to a bug in Godot and playing on the web. For the best experience, I recommend downloading the game. There are a couple of crazy bosses you'll encounter once you get deep enough.
Thanks again!