Plumbing Faucet: Water Pressure vs Water Flow Difference

The flow limiters in most faucets is based on 60psi. I have adjusted these in the cases they cannot be removed with a simple drill bit several sizes larger than the existing hole, in my last home the entire place had 3/4” copper even after the shower valves that were 1/2”. Seeing the massive supply’s and plumbing I set my master suite with a 6’ jacuzzi tub and a huge rain forest 2 head shower , it sucked , until I found the flow restrictors in each of the heads , by the design I could not remove them but opening the plastic gave me what I wanted in fact it was so good I added a ball valve on one of the heads because if alone that’s all me or the wife needed but we are both big people so we would turn on both heads and we loved that shower. Added: To provide a easier to understand answer when you have a fixed pressure and you increase the flow by increasing the orifice size the pressure is reduced so the spray may not shoot as far but there will be more water flowing. I have not seen a restrictor that is adjustable.