After setting up a QMediaPlaylist with a list of URLs and calling QMediaPlayer.setMedia(playlist), and waiting for buffer status 100%, audio stutters if I call QMediaPlayer.play() with loads of bufferStatusChanged SIGNALs emitted with values 0 and 100 in sequence:

```

player.py: player buffer fill: 100 sender <built-in method sender of Player object at 0x7f93dd96ee80>
player.py: player state changed: PySide2.QtMultimedia.QMediaPlayer.MediaStatus.StalledMedia sender <built-in method sender of Player object at 0x7f93dd96ee80>
player.py: player buffer fill: 0 sender <built-in method sender of Player object at 0x7f93dd96ee80>
player.py: player state changed: PySide2.QtMultimedia.QMediaPlayer.MediaStatus.BufferedMedia sender <built-in method sender of Player object at 0x7f93dd96ee80>
player.py: player buffer fill: 100 sender <built-in method sender of Player object at 0x7f93dd96ee80>
player.py: player state changed: PySide2.QtMultimedia.QMediaPlayer.MediaStatus.StalledMedia sender <built-in method sender of Player object at 0x7f93dd96ee80>
player.py: player buffer fill: 0 sender <built-in method sender of Player object at 0x7f93dd96ee80>
```

If I call QMediaPlaylist.setCurrentIndex with n > 0, then after a quick buffering (with proper signals bearing a percentage from 0 to 100), the reproduction is OK.

Using PySide2 on Arch Linux

Qt 5.15.11