Oh, that's interesting. The readme talks about GPU acceleration on Apple Silicon and I didn't see anything explicit for other platforms, so I assumed it needs GPU everywhere, but it does BLAS acceleration which a web search seems to agree is just a CPU optimized math library. That's great; should really increase the places where it's useful:)
Given that it took 19.64 mins to transcribe the 11 second sample wav, it’s possible I just didn’t wait long enough :)