The audio stutter/stumble problem is subtle. It only shows up once every 20-30 minutes or so. It lasts for a second or less. You can miss hearing it if you're distracted at the moment it happens. It definitely will ruin things if you're doing any rendering when it occurs. I ran the Jukebox player in BIAB for around 90 minutes, and the system stuttered around 3 times within that period.

Both my Windows 10 systems are the Fall Creator Build 1709 (Release 3). It may or may not be a problem in the earlier versions of Windows 10 (e.g., Build 1704 or earlier). I can't say, since I only installed BIAB 2018 after the Fall Creator version was installed on my PC's.

As I pointed out in my initial post, I think the software development programmer may have identified the problem as one of Windows 10 memory management within Release 3 as discussed in the MSDN thread. I'm hoping that the folks at Steinberg/Yamaha can shed some light on this. They forwarded my inquiry to their developers in Germany for review. Microsoft implied that this problem may be "fixed" in Release 4 for Windows 10.