Bug Report "Use custom audio device" - Audio cuts out

[NotJeff]

I have an AverMedia Live Gamer 4K capture card. I have my audio device setup as "Use custom audio device" under the capture card to keep the game audio in sync. At a random time, typically between 5 and 30 minutes the audio completely cuts out. Nothing shows up in the mixer.

I also have a Logitech C922 w/ a second audio device from the same mixer (mic) also setup under "Use custom audio device". The mic does not cut out.

I have tried unchecking "Allow applications to take exclusive control of this device" under the audio device. And I have checked the logs, but nothing really shows up:

18:04:17.527: User switched to scene 'Game'
18:06:35.519: adding 21 milliseconds of audio buffering, total audio buffering is now 42 milliseconds
18:56:46.514: obs-browser: [QUEUE]: Broadcasting event (follower-latest) (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
18:56:46.514: obs-browser: se-widget-alert-box(id: 1) - event:follower-latest (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
18:56:46.520: obs-browser: se-widget-alertbox 1: Sanitizer: Skipping because no message (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
18:56:46.521: obs-browser: [QUEUE]: Adding widget:1 to playing (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
18:56:46.521: obs-browser: se-widget-alertbox 1: Playing alert with current settings (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
18:56:46.521: obs-browser: se-widget-alertbox 1: Showing alert for 8 seconds (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
18:56:46.521: obs-browser: se-widget-alertbox 1: playing https://cdn.streamelements.com/uploads/4596ef0b-e476-4833-920c-a1dcbcdc3455.ogg 0.5 (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
18:56:55.530: obs-browser: se-widget-alertbox 1: Alert is done playing (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
18:56:55.531: obs-browser: se-widget-alertbox 1: clearing alert (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
18:56:55.531: obs-browser: [QUEUE]: Removing widget:1 from playing (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
19:02:21.902: obs-browser: Successfully reconnected to the socket after 1 retries (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
19:02:21.989: obs-browser: Authenticated (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
19:21:00.294: obs-browser: Successfully reconnected to the socket after 1 retries (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
19:21:00.378: obs-browser: Authenticated (source: https://streamelements.com/scripts/vendor-7d4cec3d2d.js:33)
19:22:10.413: adding 21 milliseconds of audio buffering, total audio buffering is now 64 milliseconds
19:36:45.955: adding 21 milliseconds of audio buffering, total audio buffering is now 85 milliseconds
19:41:59.714: adding 21 milliseconds of audio buffering, total audio buffering is now 106 milliseconds
20:56:31.765: User switched to scene 'End'

The only way to fix it mid-stream is to edit the properties of the capture card, change the drop down to another device (without saving), then change it back and save. That lasts for 5-30 minutes before cutting out again.

If I add the audio device separately, it works fine and doesn't cut out. But I am trying to keep the game audio together - it feeds into my mixer so I can hear the audio through the headphone monitor.