My recordings in Overwatch are quite jittery / laggy. I do not have this problem in other games.
Jitter varies and is sometimes worse than others. The example is of some horrid jitter.
I have also had this as experienced on all of my clips on my account.
In my case it was due to being in a call on Skype. So if there is anything running on your computer that is a hog like Skype is, it might be the cause of this "jitter". I pretty much just make sure only the game and Plays.TV are running if I want a recording now.