iMovie stuck at 1080p60
I'm trying to create a 4K 24fps video project, but whenever I start a new project it defaults to 1080p 60fps and won't change. I've tried to create a new project multiple times and it just won't change from 1080p60. Old projects still open at the correct resolution and framerate. Any idea how to fix it?
null-OTHER, macOS High Sierra (10.13.4), iMovie version 10.1.9