What are the best practices for handling animations at 60/120fps?

Avoid setState, use explicit animations with pre-built builders, rely on the GPU via Implicit animations, and manage Layer trees.

To achieve 120fps, the UI thread must complete its work in <8ms. 1. Use AnimatedBuilder to only rebuild the exact widget animating, not the whole screen. 2. Use Transform and Opacity efficiently, as these can be hardware-accelerated. 3. Avoid triggering Layout algorithms during animations.