Regular audio drop outs on AppleTV 4K

Only within the last week or so did this begin happening, and it wasn’t an issue before then. Now, when streaming Netflix, for example, the audio drops out for about 2–3 seconds every 10 minutes or so. I haven’t changed anything, so I’m not sure why it’s all of a sudden an issue. I’m running audio to a surround sound receiver over high speed HDMI Arc. Bypassing the AppleTV eliminates the issue, so I suspect the ATV is the culprit. I’ve read some posts from 2018 describing this with no solution, so could it be a software update that fixed the issue two years ago, and then caused it all over again?