Mac storage basics · Photos, music and video
Should I turn off background rendering in Final Cut Pro to save space?
Short answer: It can help on a tight disk: turn off background rendering in Final Cut's Playback settings so render files are made only when you ask, at the cost of smoother playback.
It can help on a tight disk. With background rendering on, Final Cut renders effects while you work, creating render files in the library. Turning it off in Final Cut Pro → Settings → Playback means files are only rendered when you ask, which saves space but may make playback of heavy effects choppier.
You can always clear render files from finished projects with File → Delete Generated Library Files.