How do I get realtime audio from android

Question

I am trying to analyze internal audio from android system to know wave amplitude of the sound that is being played at the moment. I start playing the audio on the device and after more or less four seconds the apps gets the sound that was playing. I think that the problem could start with the priority of my app on the system that cannot get audio on real time or closer to it.
I am using the AudioRecord from android

      internalRecorder = AudioRecord.Builder()
        .setAudioFormat(audioFormat)
        .setBufferSizeInBytes(124800)
        .setAudioPlaybackCaptureConfig(config)
        .build()

and the config:

val config = AudioPlaybackCaptureConfiguration.Builder(mediaProjection!!)
        .addMatchingUsage(AudioAttributes.USAGE_MEDIA)
        .addMatchingUsage(AudioAttributes.USAGE_UNKNOWN)
        .addMatchingUsage(AudioAttributes.USAGE_GAME)
        .build()

I have tried to make an accessibility service but this not improve the performance. The audio buffer is having seconds of delay.