This means you didn’t set up your zones properly. Rachio gives us many options to tell its smart system about your environment. If you chose a specific soil type but didn’t take the time to indicate which nozzle type, then the recommended duration time for watering could be ridiculous.
Try and nail down as much as you can in your zone set up and consider using fixed schedules while overwriting the watering duration to what you think is best and can afford.