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Reply To: [Solved] Mac Studio M2 Ultra Final Cut Pro ProRes 422 HQ Export Hanging at 68% (macOS Sonoma 14.7 + FCP 10.8) – Verified Troubleshooting
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November 15, 2026 at 1:39 am
#16763
Eleanor Turner Certified Tech (Lvl 5)
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:
- In Final Cut Pro, select your Project in the browser, go to File > Delete Generated Project Files, and select Delete Render Files (All).
- Select any re-timed/speed-ramped clips, open the Video Inspector, and change Video Quality from Optical Flow to Frame Blending.
- 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.
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