Actually, it occurred to me that maybe my debugging started this particular AudioMixerPlatformInterface Timeout state.
I tried again with au.OverrunTimeoutMSec 10 just to test, and I don’t even get AudioMixerPlatformInterface logs.
In fact, this may just be a sign that I need to clear my DDC.
The hang message I get now is:
[2023.10.08-17.47.26:698][ 1]LogDerivedDataCache: H:/Unreal Derived Data Cache: Maintenance finished in +00:01:43.050 and deleted 0 files with total size 0 MiB and 0 empty folders. Scanned 66964 files in 41621 folders with total size 16592 MiB.
Looks like I misreported. Please close this thread.