Apple USB-C Digital AV Multiport Adapter Malfunctioning

I’m currently having issues with the Apple-brand USB-C Digital AV Multiport Adapter connected to my 2020 MacBook Air M1. The adapter displays video just fine, but as soon as I select my display as the audio output on my MacBook, video is fast-forwarded, and the video playback time is set to some seemingly arbitrary, very large figure (I.e. 511:13:30:41/5:12). This makes the audio transfer feature of HDMI unusable.

I have tried this on several displays, and I have updated my MacBook to no avail.

This adapter was purchased from an apple approved retailer.

There is seemingly no support for apple adapters, otherwise I would be using that avenue. This is by no means a cheap adapter, and I don’t merely want to throw it away and hope that a new one would work correctly.

Any help or advice is appreciated.