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[Solved] MacBook Pro 14″ M3 Max WindowServer High Memory Leak (macOS Sequoia 15.0) – Verified Troubleshooting

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Home › Forums › MacBook, iMac & macOS Lab › [Solved] MacBook Pro 14″ M3 Max WindowServer High Memory Leak (macOS Sequoia 15.0) – Verified Troubleshooting

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  • November 15, 2026 at 5:07 am #20123
    Eric Kim
    Community Contributor
    Diagnostic Hardware Specs: MacBook Pro 14″ M3 Max (36GB) | OS Version: macOS Sequoia 15.0 | Archive Source: Apple Support Community #256332331

    I am running into a persistent issue on my MacBook Pro 14″ M3 Max (36GB) running macOS Sequoia 15.0.
    Whenever the machine encounters Private dirty memory growth in Metal compositor across multiple Spaces, the following diagnostic log appears in Console:

    WindowServer virtual memory: 18.7 GB private dirty surfaces in Metal shader cache

    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 (32GB) | Dual LG UltraFine 5K | iPhone 16 Pro Max | Seattle, WA
    iOS / Swift Engineer | "Verified Apple Discussions Archive"
    November 15, 2026 at 5:07 am #20124
    Terry Jackson
    Community Contributor
    Apple Recommended / Verified Community Solution
    This canonical solution was verified and marked as solved in the Apple Support Community archive.

    Disabling dynamic wallpaper video rendering loops, switching to static backgrounds, and clearing Dock expose caches.

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

    1. Switch all desktop spaces to static wallpapers in System Settings > Wallpaper.
    2. Flush compositor memory: sudo purge && killall Dock.
    3. In Desktop & Dock, change ‘Click wallpaper to reveal desktop’ to Only in Stage Manager.

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

    Mac mini M4 (16GB) Home Server | Apple TV 4K | Eve Energy Thread Mesh | Salt Lake City, UT
    Apple Certified Support Professional (ACSP) | Smart Home & Matter/Thread Integrator
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