UE4.25 Audio Engine Bugs - Update from 4.22 - need help!

[Allenheathx]

@luoyeshu

Thanks for your good advice.I did a minimum sound test, only a few sound played at once but the sound lag still happens just like what Allenheathx said. I think the sound lag is not caused by too many sound playing at once. The lag will always happen after a while of playing.

I think it is a memory leak when the engine running on iOS. The lag happens when the audio memory is full and starting to recycling. Normally it will not cause sound lag. It must be something wrong. And it is engine related, remember we won’t have this bug on 4.22 to iOS12 on the same project.

I still working on this bug. And I will make a demo to show how this bug happens. I am not a engine level developer for UE4 so I can’t debug this for the community. Only thing I can do is reveal.

What model phone are you testing your game on? I am concluding phones that don’t run iOS 13 aren’t priority enough to spend much time on with issues like this. Understandable but would be nice to know so I don’t waste my time trying to weed out a bug that exists on blank projects. I like to build apps on the lowest phone model the engine prioritizes. I am guessing that is iPhone 7 (since that runs iOS 13)???

Starting audio from level bp still gives audio underrun errors on blank project (iPhone 6).

Thanks