Shut down your Mac with power plugged in.Wait a few seconds, then press the power button to turn on your Mac.Press and hold the power button for 10 seconds, then release the button.Notebook computers with the T2 chip(yes this applies to the 16' MBP) Yes, ensure your Mac is plugged in to your power supply. NOW, with the above steps taken, reset the SMC and NVRAM/PRAM One thing to know is it takes about 3-4 battery cycles for the MBP battery to get 'set'. Set the above steps into place and restart the MBP.This apps helps to keep your Graphics card mainly on the integrated graphics. Install gfxCard Status (free app or Pro for $$).Install TurboBoost Switcher (free app) This keeps your MBP from throttling up to turbo mode if you don't do high powered Pro-style apps.System Settings>Notifications>Turn on Do Not Disturb>When Display is sleeping/When Screen is locked.System Settings>Bluetooth>Advanced>Uncheck 'Allow Bluetooth devices wake this computer'.

System Settings>Energy Saver I checked the box 'Automatic Graphics switching'.Best steps are here.thanks to MacWorld!: Do this before installing anything.and install fresh. This way you're getting the latest version without having to install OS updates. I've learned when I buy a new Mac the best first immediate step is to go in and do an internet recovery and erase the HD and reinstall MacOS.Once I completed these steps, I let the MBP drain to 0% battery and recharged it. And because it’s built to take advantage of real frameworks, Swift Playgrounds provides a one of a kind learning experience.I got my 2019 MBP 16' a week ago and ran into the same issue.3.5 hours of battery, so I started digging and got it corrected. The whole time you are learning Swift and SwiftUI, the powerful programming technologies created by Apple and used by professionals around the globe to build many of today’s most popular apps. Swift Playgrounds doesn’t require any coding experience - it’s perfect for anyone just starting out, from eight to one-hundred-and-eight. You solve interactive puzzles in the guided “Get Started with Code” and learn the basics of building apps in “Get Started with Apps.” You experiment with a wide range of challenges and samples that let you explore unique coding experiences. Swift Playgrounds makes it fun to learn to code and build real apps.

Swift playground on macbook pro