I spent about two hours diagnosing an issue with Premiere Pro. When I tried to play back any footage, it was skipping and the audio sounded like it was in a tunnel. I resorted to the basics and looked for any changes made between when I used Pr Pro last and when the stuttering started. The only change was FXSound was installed. I tried disabling it, but the stuttering continued. After a full uninstall, Pr Pro worked fine.
TLDR; Don’t use FXSound if you edit with Premiere Pro