A few days. Longer or shorter depending on the content. Chapter 7, for example, took five days because I had to make sure all of the dialogue went through Nayinis's weird narrative voice (basically, make sure characters talk like her), and there was a lot of weird magic.
This chapter took three...
New chapter up! I'm so exhausted. Definitely one of the darkest ones yet.
https://www.scribblehub.com/read/314639-drinker-of-the-yew-a-necromancers-tale/chapter/358194/
There are some inexpensive mics that can fix the audio quality. A couple of noise dampening wall pads and a decent directional microphone go a long way towards making good quality audio.