Animation is running very fast on certain mobile device

[Vinoth Rajendran4]

Hi All,

I was trying to perform rotation animation and I want it to perform for 8 seconds. But with latest mobile (eg. Android 13, Samsung S22 ultra), I could see animation gets completed within 4 seconds.

But with older android mobile(Android 11) or in Desktop , I could see my animation running for 8 seconds.

I am using Qt 5.15.2.

code snippet:

Window {
    id: root
    width: 400
    height: 400
    visible: true

    Rectangle {
        anchors {
            top: parent.top
        }

        width: 50
        height: 50
        color: "black"

        MouseArea {
            anchors.fill: parent
            onClicked: {
                anim.start()
            }
        }
    }

    Rectangle {
        anchors.centerIn: parent
        width: 50
        height: 50
        color: "black"

        NumberAnimation on rotation {
            id: anim
            from: 0
            to: 360
            loops: 10
            running: false
            duration: 800
        }

    }
}

Can some one guide me, why on certain mobile device , Animation running duration is varied ?

Do we have any known issue documented somewhere related to it ?

[lemons]

I did only observe the same when setting the animation factor to 0.5x in developer options.