There's nothing inherently slow about React internals. It does exactly the work you tell it to do. If you tell it to do too much unnecessary work, it'll happily

There's nothing inherently slow about React internals. It does exactly the work you tell it to do. If you tell it to do too much unnecessary work, it'll happily go do that. Svelte avoids this by magically not doing the unnecessary work. That doesn't mean it's faster, it just means your design needs to make different kinds of considerations.