https://bugs.winehq.org/show_bug.cgi?id=53796
--- Comment #5 from Artem S. Tashkinov aros@gmx.com --- I've dug even deeper.
With default settings which are
[AudioIO] RecordingDevice=Wine Sound Mapper - Input Host=MME PlaybackDevice=Wine Sound Mapper - Output
It's all good.
And this breaks the splash screen:
[AudioIO] RecordingDevice=Primary Sound Driver Host=Windows DirectSound PlaybackDevice=Primary Sound Driver