When it comes to flex scheduling, the more accurate your zone settings are the better the schedule is going to work for your yard. If you would like to take a screenshot of those settings and post them here, this community is overflowing with users that can help fine tune those, including myself!
Two other things to keep in mind:
1. The calendar can sometimes be a little confusing in flex scheduling. Keep in mind that just because it says it's watering, doesn't mean every zone in that schedule is watering.
2. Flex waters for longer durations, less often. At first glance, it may seem like the duration is high, but it's important to check the watering intervals.
Here is an article with a quick overview of how flex works: http://support.rachio.com/article/386-flex-schedule.
Let me know if you have other questions!