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[Solved] Logic Pro ‘System Overload. The audio engine was not able to process all required data’ on macOS Sonoma 14.7 + Logic Pro 10.8.1: Diagnostic steps and permanent fix

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Home › Forums › Logic Pro, Final Cut Pro & Pro Apps › [Solved] Logic Pro ‘System Overload. The audio engine was not able to process all required data’ on macOS Sonoma 14.7 + Logic Pro 10.8.1: Diagnostic steps and permanent fix

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  • November 14, 2026 at 10:17 pm #13287
    Gabriel Bryant
    Community Contributor
    Diagnostic Hardware Specs: MacBook Pro 14″ M3 Pro (36GB) | OS Version: macOS Sonoma 14.7 + Logic Pro 10.8.1 | Archive Source: Apple Support Community #256868738

    I am running into a persistent issue on my MacBook Pro 14″ M3 Pro (36GB) running macOS Sonoma 14.7 + Logic Pro 10.8.1.
    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 #2 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 Ultra (192GB) | Universal Audio Apollo x8p | Logic Pro 11 | Minneapolis, MN
    Logic Pro Audio Producer & Mixing Engineer | "Verified Apple Discussions Archive"
    November 14, 2026 at 10:17 pm #13288
    Patricia Wallace
    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.

    Apple Vision Pro (1TB) | Mac mini M4 Pro (48GB) | Studio Display | Boulder, CO
    Apple Certified Support Professional (ACSP) | visionOS Spatial Computing Developer
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