Flutter aims to provide 60 frames per second (fps) performance, or 120 fps performance on devices capable of 120Hz updates . For 60fps, frames need to render approximately every 16ms. Jank occurs when the UI doesn’t render smoothly.
Read moreDoes flutter use VM?
During debug mode, Flutter uses a virtual machine (VM) to run its code in order to enable stateful hot reload , a feature that lets you make changes to your running code without recompilation.
Read moreDoes Flutter use GPU?
Flutter works more like a gaming engine, than an app framework you may be used to. The UI is built and rendered on a Skia Canvas as it changes. Flutter updates the UI at 60fps, and uses the GPU for most of the work .
Read more