Scale is a very wishy-washy term. You can build complex applications with JS, you just need to move the scale out of the main loop. Don't run business logic alo

Scale is a very wishy-washy term. You can build complex applications with JS, you just need to move the scale out of the main loop. Don't run business logic alongside your render, or else you will indeed run into these problems. This advice isn't unique to Javascript and goes back to Carmack hacking on Doom, Wolfenstein 3D, and beyond. It's just that Javascript makes it easy to shoot yourself in the foot here, because this isn't a role that was forseen when JS was designed. Do you have any links to share? I'd love to learn more about these performance problems you describe.