Why is it watering too long?

I measured precipitation rate for my vegetable garden and set it in advanced settings of the zone. It is 2.18in/hr.
I have a flex monthly schedule called vegetable garden - morning. I enabled it. I have dripline in the veg garden. It is flex monthly schedule.
It watered first time this season this morning. I saw it took 68 mins straight to water 90 Sq ft.
Doesn’t it look too long?
Did I configure everything correctly?


My device serial number: vr0001980
It is Gen2 16 zone Rachio