https://bugs.kde.org/show_bug.cgi?id=475250

            Bug ID: 475250
           Summary: Conflicting animations driving Window Heap in and out
                    causing stuttery effect
    Classification: Plasma
           Product: kwin
           Version: git master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: effects-overview
          Assignee: kwin-bugs-n...@kde.org
          Reporter: k...@davidedmundson.co.uk
  Target Milestone: ---

When activating via a keyboard shortcut:

overviewVal which steps through from 0-1 
WindowHeapDelegate binds to this to update the position

We enter this step through:

        Transition {
            to: "initial, initial-hidden, active-normal, active-hidden"
            NumberAnimation {
                duration: thumb.windowHeap.animationDuration
                properties: "x, y, width, height, opacity"
                easing.type: Easing.OutCubic
            }

which will take effect at the last change making the last update look slow

and we also have a:
   TweenBehavior on x {}

which operates on all updates and also throws things off

Both of these are conflicting which gives us an animation that moves at
seemingly random speeds as each X update retargets an animation badly.

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