Compressing audio files is very slow

Hey guys,
I am trying to “compress” audio files (wav) by lowering their sample rate (from 8k to 3k).
But while I do that using ‘react’ and `@ffmpeg/ffmpeg`, the time that it takes for ffmpeg to do so is very long.

The commands i was running:
```js

ffmpeg.FS(“writeFile”, “test.wav”, await fetchFile(“http://localhost:3003/sample.wav”));

await ffmpeg.run(“-i”, “test.wav”, “-ar”, “3000”, “output.wav” )

```

I would love to get some help about this issue, i saw there is an option for some type of threaded running of ffmpeg, maybe some of you know more about that?