swiftui-performance-audit

To fix slow rendering and janky scrolling in SwiftUI, audit your code for performance anti-patterns like view invalidation storms, unstable list identities, and heavy computations executed directly within the view body.

High CPU and memory usage in SwiftUI apps is often caused by excessive view updates and layout thrash. Analyzing your state management and moving heavy work off the main thread can resolve these bottlenecks.

When code review is insufficient to identify SwiftUI performance issues, you can profile your app by using Instruments to capture runtime traces, revealing exact CPU usage, memory allocation, and rendering bottlenecks.

The best way to optimize a complex SwiftUI list view is to stabilize list identities and optimize state management to prevent unnecessary view invalidation, ensuring smooth data handling and rendering.

This audit specifically targets SwiftUI runtime performance issues such as rendering delays, layout thrash, and excessive view updates, rather than providing general Swift code review for architecture or syntax.

Common SwiftUI performance anti-patterns include view invalidation storms, unstable list identities, and performing heavy computations inside the body property, all of which cause significant rendering lag.