Wanted to post my solution to the audio stuttering I was encountering. It may or may not be the same type of fault referenced by the OP, but since people will come looking for solutions to Windows' audio glitches in general, I think it's still worth sharing here.
I am on a fresh install of Windows 10, on a Dell laptop with 8th generation chipset.
After trying *all* the standard 'solutions' posted all over the web, including updating every conceivable driver and messing with absolutely anything that could possibly be related to audio, nothing worked. But a couple of articles had suggested that various types of power-saving settings might potentially be involved. With that thought, I went to look through Windows' advanced Power Options, and noticed a PCI Express --> Link State Power Management section and it looked like the best candidate for causing issues, though it was a reach.
But lo and behold, when I switched its 'Plugged in:' setting from 'Maximum power savings' to 'Off', or 'Moderate power savings', the audio glitches disappeared. I was literally playing audio while I changed the option back and forth, and the audio stuttering came and went depending on whether I selected the original 'Maximum...' option or the 'Moderate...' option (or 'Off') respectively. So, an immediate and night-and-day difference.
I ended up keeping it on 'Moderate...' since that option worked perfectly well and I can still benefit from... whatever power savings that gives you.
I taxed the machine by playing a bunch of YouTube videos on top of the music, plus making lots of 'ding' system sounds (which used to exhibit the stuttering effect), all at the same time, and I couldn't get it to stutter while on the improved power setting.
And so it was that Windows had claimed more days of my life. But at least I won in the end. And maybe now you can too