

It was about one second, as if the computer was thinking before it played. There was also a short but noticeable lag from hitting the spacebar to the timeline actually playing. It was minor, but after 20 seconds a frame or two would drop.


But to no surprise, when I added graphics and adjustment layers with color, Premiere started dropping frames. Premiere ran smoothly with 4K footage - on both the 14-inch and 16-inch M1 Pro machines, I could play back the timeline at full resolution at 2x speed.
