I get this crash report:
Version: 13074
Access violation - code c0000005 (first/second chance not available)
XAudio2_7
XAudio2_7
XAudio2_7
XAudio2_7
FSD_Win64_Shipping!FXAudio2SoundSource::CreateSource() [c:\p4\unrealengine\main4-21\engine\source\runtime\windows\xaudio2\private\xaudio2source.cpp:451]
FSD_Win64_Shipping!FXAudio2SoundSource::Init() [c:\p4\unrealengine\main4-21\engine\source\runtime\windows\xaudio2\private\xaudio2source.cpp:550]
FSD_Win64_Shipping!FAudioDevice::StartSources() [c:\p4\unrealengine\main4-21\engine\source\runtime\engine\private\audiodevice.cpp:3312]
FSD_Win64_Shipping!FAudioDevice::Update() [c:\p4\unrealengine\main4-21\engine\source\runtime\engine\private\audiodevice.cpp:3551]
FSD_Win64_Shipping!TGraphTask<FFunctionGraphTask>::ExecuteTask() [c:\p4\unrealengine\main4-21\engine\source\runtime\core\public\async askgraphinterfaces.h:830]
FSD_Win64_Shipping!FNamedTaskThread::ProcessTasksNamedThread() [c:\p4\unrealengine\main4-21\engine\source\runtime\core\private\async askgraph.cpp:678]
FSD_Win64_Shipping!FNamedTaskThread::ProcessTasksUntilQuit() [c:\p4\unrealengine\main4-21\engine\source\runtime\core\private\async askgraph.cpp:575]
FSD_Win64_Shipping!FAudioThread::Run() [c:\p4\unrealengine\main4-21\engine\source\runtime\engine\private\audiothread.cpp:187]
FSD_Win64_Shipping!FRunnableThreadWin::Run() [c:\p4\unrealengine\main4-21\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:76]
It happens when I change audio from say 5.1 to 7.1 surround