I know this is a relatively old video, but you should to find out.
The header is also no longer recalculated and the performance of our flow has been improved.
Each time we made a change, we ran it back through Instruments to see whether the results matched what we expected — this is smart practice, and worth sticking to as you continue to work! Join the team in Boulder, CO, Amsterdam, or remote! This will build the app and launch Instruments.