I have met system reboot and following message from Windows 10 when I start a song in Exclusive Mode.
stop code: System_Thread_Exception_Not_Handled
what makes: w4s64.sys
I have a "Wyred4Sound DAC2" usb dac and have been using well with foo_out_wasapi in event or push mode.
It's the device driver. It has apparently thrown an exception (error) and not handled it, so it instead crashes to a blue screen. Sounds like quality software for equally quality hardware.
Try removing the driver and rely on Windows built in audio capabilities. Also, with event exclusive try a buffer less than 20 ms.
Note that WASAPI exclusive mode is getting completely rewritten for the next beta, I recommend postponing any further tests until beta 7 is out.