First levels should run with no problem, but, after, it will go too slow (7 fps), so, I recomend to go to turbowarp.
https://turbowarp.org/419379287?hqpen
1.-Move with WASD
2.-Turn with arrow keys
3.-Jump with space
TurboWarp is a Scratch mod that compiles projects to JavaScript to make them run really fast. Try it out by inputting a project ID or URL above or choosing a featured project below.