If you're using Windows Quicktime to play a .mov file and it stutters during playback, change your playback settings as follows:
Open the Edit menu within Quicktime
Select Quicktime preferences
- On the Audio tab, change 'Play Audio Using' from 'Direct Sound' to 'Windows Audio Session'
- Click Apply and OK.
Then close Quicktime and re-open the video file.
The video will now play smoothly.