https://en.wikipedia.org/wiki/File:This_shows_a_recording_of...
or the occasional look away? (for which there appears to be a feature for that)
> Look Away: enable_look_away helps create a more natural look by allowing the eyes to look away randomly from the camera when speaking
I expect both to be different: while saccades do happen when occasionally looking _away_ from a person, they also happen when looking _directly at_ one person because we don't constantly stare at a very specific unique and precise point on their face.
For the demo video, try enable_look_away = true, look_away_offset_max = 10, look_away_interval_min = 1 and look_away_interval_range = 1 (then submit), which from the result I got should really be the default for a more natural result.