Motion: About project playback performance
When you play back a project, Motion attempts to display your sequence in real time. However, if your computer has an older graphics card, or if have more than one monitor connected to your graphics card, playback performance may be negatively affected.
Your graphics card also determines the maximum file size you can import into Motion. For most recommended cards, the image size limit is 4K or 8K. For the best results, resize very large images to the largest size required in the project, but no larger. Computers with graphics cards containing minimum amounts of video RAM (VRAM) may experience poor performance (or other issues) when creating 4K projects. For more information, visit the Motion website at http://www.apple.com/finalcutpro/motion.
Note: Because of hardware limitations and differences, the appearance of projects shared between computers with different installed graphics cards may vary.