hydration smart alert

I have hydration alert set to smart. Sometimes it doesn't remind me at all during a ride. But when it does work, during the second half of the ride on the way home. It will suggest that I drink 1.1 or 1.4 bottles. Why is it doing that instead of splitting it up for two reminders maybe 0.5 bottle earlier then another 0.5 after. Maybe we should keep all the reminders to be less than 1 bottle on the next update if there is one?