Hmm, okay. I doubt this is animation related. Judging from the video you’ve posted, it seems that the camera can rotate freely, which will feel unnatural when you do certain moves (a certain “look ahead” angle is okay, but 180° is a bit much 
). You could try to limit the rotation (Pitch/Yaw) based on the forward vector of the character. Also, you might want to check the input / axis setup. Are you using keyboard/mouse?