Freezy / choppy video on replay of movie while editing.

So I imported a 30 mins long mp4 video and a dynamic link from Character Animator to Premier Pro.

I also want to do some simple text animation on Premier Pro for this video.

But I am getting a very freezy / choppy video in which the movie is not flowing correctly and instead it is showing me pieces of frames as the replay moves forward for editing.   

The Character Animator file is also only showing sections of the frames as the movie moves forward, but that isn't big deal because it is only a puppet talking, so I can live with it as it is. 

Timing the text animation is a bit inconvenient with the frames freezing, plus it is impossible to see an actual text animation on replay as it would show up in the finsih movie. 

What can I do to fix this freezing of the movie in which it is showing pieces of frames instead of letting the movie just flow on its natural time?