Hey there edemps92,
Since you mentioned this happening on multiple devices, that would typically isolate the issue to the movie(s) instead. To help further, try deleting the movie from one of your devices then check if you can play it after redownloading again:
1. Open the Apple TV app.
2. Tap Library, then tap Downloaded. If you can't see Downloaded, you may not have any items stored on your device.
3. Swipe left on the item that you want to delete, then tap Delete.
4. Confirm when prompted.
Delete films and TV shows in the Apple TV app – Apple Support
Then redownload: Download and stream shows, movies, and events from Apple TV+, MLS Season Pass, and Apple TV channels - Apple Support
Should you continue noticing audio issues, make sure you're using a reliable Wi-Fi network. If your devices are on the same network, test with another reliable network instead. This will help if your connection is causing the distortion.
If you continue noticing issues with the same movies, Get Support from Apple directly.
Take care!