Add me to the list of frustrated users. Happens consistently on every single video I play on YouTube. Even if I let the video play for a few minutes and rewind to the beginning of the video, it'll happen again. Super annoying.
I have been getting this for months and also I get random moments where the audio jumps up in volume for a second. Often startling when listening to something quiet at night. Not sure if it's related but they're both annoying as **bleep**.