'AAPL,ig-platform-id' changed from '0300923E' to '0300983E'. Either '0300913E' or '0300923E' will break the CPU PM - idle frequency will never get down to lower than 2GHz. Don't know why. '0300913E' is automatically assigned by macOS/WhateverGreen (but it breaks CPU PM) if no properties was assigned by the plist.
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