: You can find peer-to-peer troubleshooting for locked devices and iMovie 10.3.3 performance on JustAnswer .
To add music or voiceovers to your video: Imovie 10.3.3
: High-resolution video is heavy. Moving your iMovie Library to an external SSD can significantly speed up the interface. : You can find peer-to-peer troubleshooting for locked
iMovie 10.3.3 crazy slow at times... - Apple Support Community Imovie 10.3.3