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[Solved] MacBook Pro 14″ M3 Pro encountering Logic Pro ‘System Overload. The audio engine was not able to process all required data’ after update (macOS Sequoia 15.1 + Logic Pro 11.0.1)

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Home › Forums › Logic Pro, Final Cut Pro & Pro Apps › [Solved] MacBook Pro 14″ M3 Pro encountering Logic Pro ‘System Overload. The audio engine was not able to process all required data’ after update (macOS Sequoia 15.1 + Logic Pro 11.0.1)

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  • November 14, 2026 at 11:54 pm #14995
    Sharon Carter
    Community Contributor
    Diagnostic Hardware Specs: MacBook Pro 14″ M3 Pro (36GB) | OS Version: macOS Sequoia 15.1 + Logic Pro 11.0.1 | Archive Source: Apple Support Community #256422401

    I am running into a persistent issue on my MacBook Pro 14″ M3 Pro (36GB) running macOS Sequoia 15.1 + Logic Pro 11.0.1.
    Whenever the machine encounters CoreAudio thread scheduling buffer underrun with third-party AU plugins (-10011), the following diagnostic log appears in Console:

    CoreAudio: [com.apple.coreaudio] Logic Pro audio processing thread #4 exceeded buffer latency budget (-10011)

    I verified that hardware connections are intact and tested across different power sources. What is the verified diagnostic procedure to permanently eliminate this symptom?

    Mac Studio M2 Max (64GB) | Neumann KM184 Pair | Logic Pro 11 | Stockholm, SE
    Classical Pianist & Spatial Audio Arranger | "Verified Apple Discussions Archive"
    November 14, 2026 at 11:54 pm #14996
    Margaret Stevens
    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.

    iMac 24″ M3 (16GB) | AST 2 Diagnostic Station | ESD Workstation | Perth, AU
    Apple Certified Support Professional (ACSP) | Apple Certified Service Technician (ACiT / ACSP)
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