Let’s benchmark expectations. On a 2020 MacBook Pro (Intel i7):

The NDS uses two distinct ARM architecture CPUs that run concurrently:

A WebAssembly port of the classic desktop DeSmuME emulator. It brings highly accurate C++ emulation directly into the browser.

This symbiotic relationship between the performance of WASM and the flexibility of JavaScript is what makes a seamless, no-installation DS emulation experience possible within a browser tab.

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