@azdavidr Thanks for all of your responses. I have checked every article available to me here, and really found nothing. I will look into the Flex scheduling to see if it more fits my needs. Again the end result needs to be a lower water bill, and I don't think I'll get that by watering for ten hours every five days.
When you speak of "longer intervals", are you referring to the feature that will break up the total time spent in a zone to prevent runoff? From what I can tell, it didn't even do that at all during my initial run. The "activity feed" just showed it moving from one zone to the next for the full duration of the zone.
I also checked Bermuda root depth, and some of them said "up to 24 inches", so not sure I could realistically lower it from the 9 inch default. I will continue investigating, though.
EDIT: I just set up an interval (Flex?) schedule to run every four days. For some reason it only defaulted to water 4h21m. I wonder why the "as needed" runs for so much longer?
I wonder if we could get @emil to chime in on this thread?