Is there have any other audio service/dsp than PA equalizer? Like Xiaomi original, Xiaomi audio,music fx,etc
Maybe the process is colliding with another equalizer service / DSP service.Especially if it gets root rights. I don't know, just guessing because other audio services that get root rights definitely get priority first.
When I turn on the audio service from the stock ROM it conflicts with the PA equalizer service.
Sometimes mix well, some time PA equalizer is not processed the audio, if that happens i will delete app data & relaunch app.