Check if you have a half-closed valve somewhere. Main valve? Valves at the meter? I have a PRV set at 50psi, 3/4 main. I'm getting 7gpm at the outside faucets. What volume are you getting? Did you try to measure? Fill a bucket with water using gallon jugs for reference, mark the level, see how long it takes to fill from outside faucet to the same level to get the real flow rate.
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