yeah, and after your first 100 or so it gets even better.. When I first got my unit it took almost 8 hours to get 30 gallons when I was filling my tank for the first time. It took almost 4 days to do the tank and sump/refuguim. I don't know if it is like that for all RO units but it was like that for me with this unit.
Let me add and my waterflow. I have no idea what the pressure is, its enough to do dishes, shower and laundry but I am assuming that it has to "normal"..