that actually sound worse than the original.

Netflix released the film with multiple audio options. To get the best quality here, ensure your settings are set to "High" or "Ultra HD" and that you are using a device that supports 5.1 surround sound. How to Fix Audio Sync and Quality Issues

A "quality fix" usually refers to a community-sourced or officially patched audio file that corrects these synchronization and leveling issues. The Official Way to Get High-Quality English Audio