Having the strangest audio issue with Windows 10 at the moment when outputting sound through HDMI to my monitor which has external speakers plugged in. The audio had always worked fine but recently it now only plays audio for around 10 seconds then stops.

Volume mixer still shows the audio playing. If I mute then unmute, the audio starts working again for about 10 seconds before stopping again.

When using a USB audio headset I don't have any similar issues.

Any help appreciated!!