Thanks for the feedback!
The tutorial was implemented in a rush and I forgot to make the dialogue skippable. I'm aware the text takes a little too much to render. For the browser version not running well, the game uses a lot of GPU particles and is poorly optimized when it comes to PackedScene instancing (like enemies, money, effects, etc). Also, it uses glow, which is not very web friendly as far as I know. onc ethe jam is over and I get some time, I'll try to fix all the browser issues.