I don't know your prompt but I'd suggest also adding things like "use best GPU practices" and "use techniques AAA games use to achieve the best performance and best visuals", "make it beautiful like a AAA game" etc...

Also, comparing, the three.js version downloaded 395k representing 1.6meg of data. The raw version downloaded 109k representing 200k of data. You listed the three.js version is as smaller but it's not smaller, it had to download three.js