React native complex view is really slow to re-render after upgrade from 0.66.5 to 0.71.3

I have my own calendar component that always renders three months at a time, each containing 6 weeks, each containing 7 days. Each day has a touchable-opacity, that sets the selected day of the calendar component. That adds up to a lot of views to re-render on every day change. The day components are memoized and shouldn’t re-render unless the day was selected.

I used flipper to diagnose the render times. On react-native 0.66.5, the entire render took around 50ms on 0.73.1 it took over 500ms. I haven’t changed anything else in the code.