When swapping the audio output device while running PIE or a packaged game on Windows, Quartz clocks stop. Does not repro in Release-4.27, but can be reproed in Release-5.0.
1) Sync to the AudioQA project
2) Launch the map AQ_Quartz
3) PIE
4) Enter the 0.1 Simple Test Clock - BPM test box
5) Observe a clapping sound plays at regular beats
6) Alt-tab out of PIE
7) In Windows, swap your Output Audio device to another device than the one you are currently using
8) Refocus the PIE window
Expected Result:
The Quartz clock continues after you changing the audio output device (the regular claps are still heard)
Actual Result:
The clock stops
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-150823 in the post.
| 0 |
| Component | UE - Audio - Quartz |
|---|---|
| Affects Versions | 5.0, 5.0.1 |
| Target Fix | 5.0.2 |
| Fix Commit | 20065333 |
|---|---|
| Main Commit | 20067758 |
| Created | May 2, 2022 |
|---|---|
| Resolved | May 5, 2022 |
| Updated | May 16, 2022 |