“fmod-audio-preload-threshold -1” is already set, as I had performance problems previously with streaming too many sounds.
I don’t have OpenAL in my current build but I will give it a try when I get a chance to do a new build. I remember having other issues with OpenAL previously in any configuration so it might fail for a different reason.
Using both a non-threaded build and single-threaded work just fine.
The last printout before deadlock seems to always be
:audio(debug): FmodAudioManager::audio_3d_set_listener_attributes()