A couple of months or so ago I had a similar problem (pre SU10) with a slight audio glitch and a very slight pause/lag/stutter. After doing a bucket load of other stuff first (which proved a complete waste of time!) I eventually reinstalled/updated my audio driver and updated the software on my logitech headphones. Thankfully, that sorted the issue. It was pretty frustrating at the time!
There could be loads of reasons for why this is happening on your own system but anyway I thought I’d mention this for what it’s worth 