Duke, I am not your enemy here, and sarcasm will get you nowhere.
Back in 1984 I started out as a cinema projectionist.
On 35mm – this is where celluoid is played back at either 24 frames-per-second, or 25 frames per second or whatever speed the projector was set to in fps (Called fps in common language).
Full frame though the gate, or progressive as we call it today for video.
Let’s for argument say that you swing the camera around, or roll a graphic fast up the screen, then it will start jumping, as the frames are not played back fast enough to make it a smooth movement.
For “slow-motion” you might shoot 120 fps and play back at 25fps.
Likewise, if you wanted to make it faster, you could “cut” frames out, or film a projection run at half speed.
Still with me?
Here is the kicker: If you have progressive footage, it will always remain progressive, so depending on your playback, you could render out your movie with progressive video in an interlaced format to allow your text to roll smoothly.
Or you change the speed of your text roll to a longer length until there are no jitter or artefacts.
Obviously, sometimes flicker can from other sources like not using an appropriate font, or using an unregistered plugin – there are many ways this can go wrong. But my first call would be to start with making the text roll for much, much longer (slow it down in case that is not apparent), to see if that removes the jitter.
Good Luck.
Atb
Mads