lisyarus, (edited ) To all players who've faced sound issues after playing the game for a while: I've identified the problem (a nuanced audio resampling bug in my audio mixing library), the fixed version is already on Steam!
As always, go try my first released game, I worked hard for almost a year to make it :)
https://store.steampowered.com/app/2403100/Costa_Verde_Transport_Department/