https://bugs.winehq.org/show_bug.cgi?id=40203
--- Comment #3 from Engys engys@lumalab.net --- Only to make things more clear. When I disable winepulse.drv on my Linux system winealsa.drv will automatically catch up the job and let me use WASAPI under Reaper.
Bad thing on this Alsa fallback is that the audio device get blocked from Reaper and is not usable from any other program anymore. And yes I am a big fan from Pulseaudio and I tested dmix enough to be able to say that dmix only is not a audio setup I will like to have on my Linux system anymore.