I created a pack and it's working on 1.14 but when I update to 1.15 to 1.16.0.61 Beta is not working. I tried to find what is the causing of it but I can't. The menu music is working except on the world, the creative and the other music include on worls while playing.
I gonna add another problem I experienced bout' the game
Going to the settings is pretty slow and game loading too.
Maybe my pack is too big for the game

Phone: Oppo r7kf

I can't attach a video that exceed 10 MB so I gonna leave it here:
https://drive.google.com/file/d/1fVwdf0MpxvsAVsfotBHquWl9nzpJ57Q_/view?usp=drivesdk