Can I ask what language/stack you’re using for your project? More specifically, is it in Python? I’ve had mediocre (though at least partly usable) results on JavaScript repos, and relatively poor ones on anything less popular.
It's also very sensitive, unsurprisingly, to development documentation that is moving quickly, e.g., most AI APIs right now. A lot of manual intervention is still required here because of out-of-date references to imports, etc.