I noticed the fox demo's wasm_example_bg.wasm is 22MB. That seems large? Is there code splitting?
Also, seems streaming is broken:
wasm_example.js:285 `WebAssembly.instantiateStreaming` failed because your server does not serve wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error: TypeError: Failed to execute 'compile' on 'WebAssembly': Incorrect response MIME type. Expected 'application/wasm'.