I can only guess as to how you describe it that either the hard drive or the cam are not running at the same speed and the difference is the jerky results,or you have other programs like a virus scanner ckecking the file as it saves.
Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
This 2D animation about monsters is illustrated in a Van Gogh painterly style
Siri not working? Try these troubleshooting fixes
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.