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Reply To: [Solved] Final Cut Pro ProRes 422 HQ Export Hanging at 68% on macOS Sequoia 15.1 + Final Cut Pro 11.0: Diagnostic steps and permanent fix

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Home › Forums › Logic Pro, Final Cut Pro & Pro Apps › [Solved] Final Cut Pro ProRes 422 HQ Export Hanging at 68% on macOS Sequoia 15.1 + Final Cut Pro 11.0: Diagnostic steps and permanent fix › Reply To: [Solved] Final Cut Pro ProRes 422 HQ Export Hanging at 68% on macOS Sequoia 15.1 + Final Cut Pro 11.0: Diagnostic steps and permanent fix

November 14, 2026 at 1:57 pm #5515
Claire Bennett
Lead Moderator
Apple Recommended / Verified Community Solution
This canonical solution was verified and marked as solved in the Apple Support Community archive.

Purging generated project render files and disabling Optical Flow on speed-ramped clips.

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

  1. In Final Cut Pro, select your Project in the browser, go to File > Delete Generated Project Files, and select Delete Render Files (All).
  2. Select any re-timed/speed-ramped clips, open the Video Inspector, and change Video Quality from Optical Flow to Frame Blending.
  3. Export destination should be an internal APFS location first before transferring to external storage.

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

Apple Certified Support Professional (ACSP)
Cupertino, CA | "Precision Apple Diagnostics"