Hello,

FCPX Auto Captions doesn’t learn or adapt — it uses fixed speech recognition each time, so it can’t remember or correct words like “lotteries.” For consistent results, use a tool with custom vocabulary or AI learning (e.g., Whisper, Descript, or Rev AI).

I think you should update your GPU drivers (clean install) or disable or remove conflicting apps (e.g., Insta360Stitcher).

Yes. Multiple magnetic masks are very GPU-heavy in Final Cut Pro, and FCP often can’t fully use render files for them. So playback stutters even after rendering, but exports look fine. The fix is to bake the effect (Render & Replace or export a ProRes copy) or use optimized/proxy media.