How do you optimize rendering performance in Xamarin.Forms at scale?

Rendering performance is optimized by reducing layout complexity, using virtualization, and minimizing renderer overhead.

Xamarin.Forms performance issues often arise from deep layout nesting and excessive UI updates. Optimization includes using CollectionView instead of ListView, enabling compiled bindings, reducing StackLayout nesting, using Grid efficiently, and avoiding unnecessary property changes. Renderers should be minimized or replaced with handlers in modern architectures.