Making scrambled eggs sous vide takes more time than a typical breakfast, but the payoff is in freakishly soft and fluffy eggs. Adding fats such as cream or butter helps improve the texture a lot.
Before cooking your eggs, blend them together so your ingredients are thoroughly mixed.
Massaging the eggs to mix them during the cooking process will help
Be forewarned, sous vide scrambled eggs can look strangely smooth, so you can shred it a little to add texture.