I'm using FCP 7, editing footage that was shot with a Sony A7-S at 24fps. I converted it to QuickTime H.264 files. Files are on an external hard rive.
On the timeline, whenever the player head approaches the end of one clip, the image in the outgoing clip hesitates or stutters just before the transition to the next clip. (The same clip plays fine with no stutter in the Viewer window.)