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  • What about using the Balanced Power Plan (built into Lenovo machines) so that the machine may adapt to the power requirements in use at a given time. I do this on my Lenovo machines and no issues with sound.
    – anon
    Commented Feb 13, 2020 at 14:21
  • It still has the same problem because "Processor performance boost policy" on balanced is set to 60% when connected to AC. Any value above "0%" causes the audio to crackle
    – Jn Coe
    Commented Feb 13, 2020 at 15:25
  • Did you try a new Audio Driver? Also try BIOS and Chipset Updates
    – anon
    Commented Feb 13, 2020 at 16:18