title: Flutter 120fps issue
body: <p>scenario:
  have an application in flutter with a hard-coded list of 20 cards after a release build of this on my 120 fps devices it still feels like 60 fps how to fix it while the native android counterpart has a smooth render at 120 fps.</p>
  <p>have tries the above scenario will the scrolling based widget both builder-based and normal ones.</p>
  <p>Is it a flaw in flutter that it doesn't render at 120 fps.</p>