For some reason the default is 2 hours, twice per day. You need to program it to run 24 hours for the right results.
Also, I think you misread about the size. The Bullfrog circ pump is bigger than most companies dedicated circ pumps at 39 gpm. It is not bigger than the jet pump which is the default filtration pump. That's part of why you want it though because it's smaller and more efficient.