Twice this evening, during playback in a project with moderate system resource utilization (see image), Logic (10.4.8 on a 2018 MBP) output garbled noise at AN INSANELY LOUD +41 DB. The first screen capture of the main window shows this having happened at around 33 seconds. The second screen capture shows that during while repeating playback (both from the beginning) it did not happen.
Any thoughts, community? Bad acting third-party plugins is no answer. This should simply be impossible. Tympanic membranes and speakers will be destroyed.