Thank you very much for the detailed feedback! I noticed that issue as well, but I wasn’t sure how to address it, so I recommend playing the desktop version. Thank you for suggesting a fix as well! I’ll give it a try!
Unless you have crazy loops in the game at the same time you're loading audio for some reason it's almost definitely solvable in Project Settings under audio/driver/output_latency.web. I find that setting it to a higher value will usually zap all the crackling before it gets too noticeable. My game in this jam had that setting at something like 80 or 90 milliseconds, which might be a lot if it was a rhythm game or something, but it still feels pretty tight to me with a huge amount of audio cues happening simultaneously. Hopefully that helps in the next one!