Since it's not the camera that's recording the screen, there's no setting in the camera app that will affect it. What you're seeing in that attachment looks like a recording or playback that's not fast enough. It can be due to a slow recording app, a slow phone or a phone running too much at one time for the hardware capability it has. (Running a CPU-intensive game, and trying to records the screen at the same time, takes more power than most phones have.)