How to reproduce:

1. Open the attached project and a "Test" scene in it.
2. Open the Console window, play the scene and notice how the first AudioFilterTimer logs almost twice as much data as the second.
3. Turn off play mode and disable Audio Controller script in the Audio inspector window.
4. Play the scene again and notice that now both filters logs similar amount of data as expected.

Reproducible: 5.2.4f1, 5.3.2f1, 5.3.5f1, 5.4.0b21

Note: AudioFilterTimer counts the data size in OnAudioFilterRead. AudioController calls Play every update.