AVAudioPlayer init very slow on iOS 17 Simulator

Question

Created Sep ’23

Replies 7

Boosts 3

Views 2.8k

Participants 8

On Xcode 15 (released version), the iOS 17 Simulator will stall / lag as soon as an AVAudioPlayer is initialized.

let audioPlayer = try AVAudioPlayer(contentsOf: URL)
audioPlayer.volume = 1.0
audioPlayer.delegate = self
audioPlayer.prepareToPlay()

Typically you would not notice this in a music app for example, but it is especially noticable in games where multiple sounds are being played using multiple instances of AVAudioPlayer. The entire app slows down because of it.

It works fine on real devices and on iOS <=16 Simulators.

I noticed that the iOS 17 simulator immediately shows an error in the console:

66.051 HALC_ProxyIOContext.cpp:1.329 HALC_ProxyIOContext::IOWorkLoop: skipping cycle due to overload

and in the past iOS Simulators have been having trouble with audio.

Unfortunately I cannot find a solution. Anyone?

Boost

Answer 1

eric113 OP

Sep ’23

Same problem, hope solution soon

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Answer 2

polymerchm OP

Sep ’23

Works fine on MacCatalyst on the machine itself, but not on the 17 simulator.

0

Answer 3

festival OP

Sep ’23

Same problem. Some iOS 17 simulators are working with audio some not. On a M2 Mac

0

Answer 4

stopthatnoise OP

Feb ’24

the same problem on iOS 17.2 sim

0

Answer 5

stacconi OP

Feb ’24

We are experiencing the same huge lag and it's really affecting our development. It only happens on the Simulator. Did anyone find a workaround or solution!?

I think this is the same issue as in this thread: https://forums.developer.apple.com/forums/thread/732477

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Answer 6

radox1 OP

Feb ’24

Same issue on WatchOS 10.1+ simulators on a M1 machine.

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Answer 7

mgoemmel OP

Feb ’24

Same here on a M1 machine. Very annoying during development.

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