** Summary changed:

- Mouse cursor stutters but only over GUI elements that are animated
+ Mouse cursor stutters over GUI elements that are animated

** Description changed:

  [ Impact ]
  
- Mouse cursor stutters but only over GUI elements that are animated.
+ Mouse cursor stutters over GUI elements that are animated, such as GTK
+ apps, web pages and shell elements.
  
  [ Test Plan ]
  
  1. Open Settings.
  2. Move the cursor up/down over an empty area of the desktop.
  3. Move the cursor up/down over the list pane on the left side of the 
Settings window.
  
  Expect: No difference in cursor smoothness whether the window below is
  animating in response to movement or not.
  
  [ Where problems could occur ]
  
  In frame scheduling, so the risk is more stuttering or screen freezes.
  
  [ Workaround ]
  
  Add this to /etc/environment:
  CLUTTER_PAINT=disable-dynamic-max-render-time

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https://bugs.launchpad.net/bugs/2023766

Title:
  Mouse cursor stutters over GUI elements that are animated

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