Sound delay on older mobile devices

I made further tests. This delay is NOT happening when playing Unity sounds directly! Only with the sound groups in master audio plugin! I triggered them side by side.
I also changed the latency setting in the Unity Audio Manager but it didnt change the behaviour.

Hi, thanks for your answer.
Did you do tests on older mobile devices with your game?
I am not using resource or internet files. The same project worked on the particular devices without lag in the past.


I will do further tests trying to narrow the problem on monday.
I use Git so i can try to find the last version where everything was okay.
I will also try to create a small repro project to make sure its not project specific.

I use Playmaker for 90 percent of my coding so i use the Playmaker action "play sound" to compare to your "Master audio play sound" action.
This is the code of the "play sound" action (which wil cause no delay):


// (c) Copyright HutongGames, LLC 2010-2013. All rights reserved.

using UnityEngine;

namespace HutongGames.PlayMaker.Actions
{
[ActionCategory(ActionCategory.Audio)]
[Tooltip("Plays an Audio Clip at a position defined by a Game Object or Vector3. If a position is defined, it takes priority over the game object. This action doesn't require an Audio Source component, but offers less control than Audio actions.")]
public class PlaySound : FsmStateAction
{
public FsmOwnerDefault gameObject;

public FsmVector3 position;

[RequiredField]
[Title("Audio Clip")]
[ObjectType(typeof(AudioClip))]
public FsmObject clip;

[HasFloatSlider(0, 1)]
public FsmFloat volume = 1f;

public override void Reset()
{
gameObject = null;
position = new FsmVector3 { UseVariable = true };
clip = null;
volume = 1;
}

public override void OnEnter()
{
DoPlaySound();
Finish();
}


void DoPlaySound()
{
var audioClip = clip.Value as AudioClip;

if (audioClip == null)
{
LogWarning("Missing Audio Clip!");
return;
}

if (!position.IsNone)
{
AudioSource.PlayClipAtPoint(audioClip, position.Value, volume.Value);
}
else
{
var go = Fsm.GetOwnerDefaultTarget(gameObject);
if (go == null)
{
return;
}

AudioSource.PlayClipAtPoint(audioClip, go.transform.position, volume.Value);
}
}


}
}

Okay i think i narrowed down my problem.

Because of debugging another problem (broken unity splashscreen on iOS) i deactivated "Preload Audio data" in all my sound files.
This caused the delay! Reactivating the Preload and my problem is gone!

I am a bit confused now what is the best way to load and unload the Audio. I already re-read the last two chapters of your manual.

My game has only one scene (which doesent reload during a session) and I am using two dynamic sound groups (switchable audio skins, instantiated on demand).
With "Preload Audio data" enabled I have a quiet long load time on Scene load because everything is loaded into memory, even the second not yet instantiated dynamic sound group is loaded.

Is there a way to do the preloading manually? I would like to preload the content of the dynamic sound group only on instantiation instead of scene load.
Would it make sense to deactivate "Preload Audio data" and load each clip with "AudioClip.LoadAudioData" command after instantiating the dynamic sound group?



Thanks for your help!

Yes thats the case. Maybe its a Playmaker issue. I switched from instantiation to an additive async scene load (using an empty scene just the Dynamic scg prefab)that way its not preloaded on entering the main level.

thanks again.