https://bugs.winehq.org/show_bug.cgi?id=46918
--- Comment #10 from Paul Gofman gofmanp@gmail.com --- Yes, can’t it be that Windows just calls _LockForProcess only when the voice chain is initialized and about to start? Why would they make a separate function otherwise? If that is the case then there is the room for other problems in apps which get that called at the wrong moment. But this probably can’t be guessed without testing on Windows. IIRC when I was running my test for the previous bug with additional logging Windows did not call _Lock on adding effect, but that is something to be verified.