@above; obviously you're going to be slow at it the first time you get around to actually starting. Including everything, in the past gen, to breed an egg at first it took me around 1 to 1 1/2 hours to complete (nature, gender, shininess, ability, egg moves, IVs, etc.).
However, once you get super used to hitting your delay, this is it. I have hit my delay on the first reset and second reset. In these cases, RNG'ing was extremely fast and took only about 30 mins. Keep in mind I'm talking about 4th gen, but I imagine 5th gen abuse is quite similar