This was also commonly reported on AMD's most recent 5xxx series, from what I recall. Main reason I skipped the 5700XT. Hope it's not still that same issue, that would be pretty sad...
I've experienced this on multiple AMD cards from 5700XT onwards, using HDMI audio to receivers. It is
still that issue and I check every generation to see if they've solved it. So far, no. Sometimes AMD mention "fixed issue with audio interruption using HDMI receivers" but it has never helped me.
5700XT, 6600, 6700, 6700XT, 7800XT, 9070XT. The only recent AMD card I've had access to and didn't try was a 7900XT.
TVs from Hisense and Samsung, receivers from Yamaha and Marantz.
This is why I run a GeForce in the living room. You have to make a choice between Nvidia's abysmal handling of TV resolutions and refresh rates or AMDs issues with HDMI audio. At least the Nvidia workarounds for dumb resolution/refresh are software-based and don't require me to mess with changing cables, so that's what I stick to, even if it's the worse option IMO.
For AMD GPUs on receivers, I opted to just bypass HDMI audio entirely for two reasons. Receivers that handle 4K 10-bit HDR properly cost silly money and are still behind the curve when it comes to high-refresh. So HDMI to TV directly, to get Native 4K120 HDR without the receiver f*cking everything up, and digital audio direct to receiver, bypassing the TV.
AMD use a newer audio driver than Nvidia and that seems to be the issue, but I've never bothered messing with the GPU's audio driver when better, more permanent alternatives exist.
For what it's worth, you can downgrade the audio driver in device manager to the basic Microsoft one that Nvidia uses, I believe that is supposed to solve this but it'll get replaced every time you update your drivers so I find it an irritating solution unless you are disciplined and mindful enough to deselect the HDMI audio driver ever time there's a graphics driver update.