Finds out why a SwiftUI screen is slow and what to change: classifies the symptom as a hang, a hitch or excessive updates, audits the code for the usual causes, reads Instruments evidence (the SwiftUI instrument, Time Profiler, Hangs, Hitches), proposes targeted fixes and checks them with a second measurement. Use when the user says "my list scrolls badly", "typing lags in this view", "the app freezes when I open this screen", "why does this view re-render so often", "audit this SwiftUI code for performance", or shares an Instruments trace or screenshots of one.
