Adding to those digging into the CPU troubleshooting, I'm running an AMD FX 9370 (8 core @ 4.4ghz each). I also, like everyone else here, had no issues until 6.0. Installing the spatial audio did help in my case-until 6.01, which made things worse. Another user graciously mentioned that immerse (the spatial audio software) did release an updated version. Installing this again did help in my case, but of course, the audio still becomes broken for (insert the hundreds of causes) after a while.

The only system adjustment that made a difference (I tried pretty much all of them listed in various places in this thread) was adjusting power settings. I never realized I was in 'balanced' mode, likely because it's never been an issue until now. So to anyone else that may have a similar setup to mine, enabling the spatial audio and creating a new power profile setting helps with the stuttering not occurring as frequently.