I rely heavily on a decent JS performance baseline for http://8bitworkshop.com/ http://8bitworkshop.com/, and I also rely on asm.js / WASM. But I need different

I rely heavily on a decent JS performance baseline for http://8bitworkshop.com/ http://8bitworkshop.com/, and I also rely on asm.js / WASM. But I need different things from them. For JS, I need consistency and stability, because I'm dynamically generating code. Usually I'm pretty satisfied, but sometimes after recompiling code I get a huge performance hit for no reason. For WASM, I know I have stability, but I need faster load times. On my Chromebook, for example, it takes 10-20 seconds just to load the WebAssembly. If this problem is solved, I might move everything performance-sensitive over to WASM eventually.