It's not exclusively a MBP issue or a problem with Apple's internal sound cards. Adobe is entirely to blame for this one. I use an iMac Pro with a pro-grade thunderbolt audio interface, and I've been having the same thing happen since updating to PP2019. For me, it's usually when I'm using one of the audio restoration effects like Denoiser or Dereverb on an audio track. If I start playback from the start of the sequence, as soon as the playhead hits the first audio clip in the track containing the effect, I'll get a very loud burst of digital noise. Usually it's solved by disabling the Denoiser or Dereverb. However, I've also experienced occasional instances of continual distorted noise during playback, even when an audio restoriation effect wasn't in use. I tried disabling the audio input in the hardware settings like one Adobe support person suggested, but it didn't fix anything (because it's clearly not an audio feedback loop, its some kind of crazy digital distortion). It's on Adobe to fix this before it destroys everyone's speakers. They really need to stop focusing on what new features they can pile on in Premiere and just spend a year or so fixing their shit to make it more stable, reliable, and functional across the various OS and hardware platforms.
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