Stutter problem during animated player camera when looking around during matinee track, help needed

I have animated the default FirstPersonCharacter in matinee with movement broken in Blueprint, so you can only look around with the mouse (and hopefully VR headset which is the goal). But when the First Person camera starts moving on it’s matinee track the camera is starting to stutter! How can i make the stutter which is stuttering the camera view going up and down to stop?

How to make the experience go smoothly? And, why is there a stutter?

Thanks for your help.