I've had some audio oddities for the last few months - seems to date back to one of the updates - it used to be flawless. It's not a big deal but things like the AP pings occasionally seem to "interfere" with other audio, or speakers seem to briefly go mono then back to stereo when playing that type of sound. Pretty sure it's a software thing, maybe the Intel Atom struggling a bit or just a bug in the sound stack somewhere?
The Ryzen seems to have it just as bad, so it must (?) be a software issue. Not sure why it doesn't seem to affect everyone the same way, though. I'll try to drive my brother's Model 3 and see if that does it too.