In case it helps, I submitted a couple crash reports when I got a crash with ASIO recently (using my RME HDSP9632 card). I’ve never had any luck using ASIO with FMOD Designer or Studio. I used WASAPI with Designer (which worked fine), and am trying out Windows Sonic since WASAPI has that SRS Downmixing bass reduction problem (see here for more details No bass in Fmod ). My concern with Windows Sonic is I don’t know if it colours the sound in any way.