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Albert Ross

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  • November 14, 2026 at 9:10 pm in reply to: [Solved] How to fix Logic Pro ‘System Overload. The audio engine was not able to process all required data’ caused by CoreAudio thread scheduling buffer underrun with third-party AU plugins (-10011) on Mac mini M2 Pro #12401
    Albert Ross
    Community Contributor
    Apple Recommended / Verified Community Solution
    This canonical solution was verified and marked as solved in the Apple Support Community archive.

    Increasing I/O buffer sample size, maximizing processing threads, and freezing high-CPU synth tracks.

    Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:

    1. Navigate to Logic Pro > Settings > Audio > Devices and set I/O Buffer Size to 512 samples (or 1024 for mixing).
    2. Set Processing Threads from ‘Automatic’ to the maximum available performance cores.
    3. Enable Track Freeze on tracks with resource-heavy synthesizers or convolution reverbs.

    Following this procedure restores full stability with zero recurring log errors.

    MacBook Air 15″ M3 (24GB) | LG UltraFine 5K | Apple Pencil Pro | Singapore
    Apple Certified Support Professional (ACSP) | Product Designer & Design Systems Lead
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