# Sometimes play a slow distorted music with iphone (SOLVED)

**URL:** <https://forum.defold.com/t/sometimes-play-a-slow-distorted-music-with-iphone-solved/81751>\
**Category:** Bugs\
**Created:** [October 12, 2025, 9:43am UTC](https://forum.defold.com/t/sometimes-play-a-slow-distorted-music-with-iphone-solved/81751 "2025-10-12T09:43:22Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![vtvitzh](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/vtvitzh/32/41175_2.png) [@vtvitzh](https://forum.defold.com/u/vtvitzh)\
**Post date:** [October 12, 2025, 9:43am UTC](https://forum.defold.com/t/sometimes-play-a-slow-distorted-music-with-iphone-solved/81751/1 "2025-10-12T09:43:23Z")

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Sometimes my app play a slow distorted music with iphone.  
If you know how to deal with this please let me know.

This occurs when launching the app or switching apps.  
The exact conditions for reproduction are unknown.  
Trying to record on my iPhone temporarily resolves the issue.

In my app, I run multiple Collections at the same time, and one of the Collections plays only music.

When symptoms appear, I tried sound.pause(false/true) and sound.stop() play() but it didn’t improve anything.

**Defold version (REQUIRED):1.11.1**

**Platforms (REQUIRED):iOS 18.6.2, iPhone13 mini**

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<div class="post-metadata">

**Author:** ![britzl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/britzl/32/23_2.png) [@britzl](https://forum.defold.com/u/britzl)\
**Post date:** [October 12, 2025, 9:23pm UTC](https://forum.defold.com/t/sometimes-play-a-slow-distorted-music-with-iphone-solved/81751/2 "2025-10-12T21:23:58Z")

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Could you please try to set the Sample Frame Count to 2048 as discussed here:

[https://github.com/defold/defold/issues/10971](https://github.com/defold/defold/issues/10971)

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<div class="post-metadata">

**Author:** ![vtvitzh](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/vtvitzh/32/41175_2.png) [@vtvitzh](https://forum.defold.com/u/vtvitzh)\
**Post date:** [October 13, 2025, 5:05am UTC](https://forum.defold.com/t/sometimes-play-a-slow-distorted-music-with-iphone-solved/81751/3 "2025-10-13T05:05:14Z")

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```lua
Sorry, it was a known issue.
I would try setting Sample Frame Count.

```