Takes 4 MINUTES to run 2.5 GALLONS OF WATER.  My old tub and shower faucet took maybe a few seconds to run that much water.  I get the water saving thing.  BUT THE FAUCET SHOULD AT LEAST PUT OUT THE WATER PRESSURE IT SAYS IT IS SUPPOSED TO.  I know my house psi is not the problem because if it weren't for the other valves leaking horribly, I NEVER WOULD HAVE CHANGED MY FAUCET SET UP IN THE FIRST PLACE.  MY VERY FIRST AND LAST TIME I BUY FROM WAYFAIR.  Just for the record, I have laid tile for years and a certain amount of plumbing knowledge is essential for that job, so I do know what I am doing, and I did a professional job of plumbing the faucet.