QML timer too fast with animation on Ubuntu with NVIDIA Optimus

import QtQuick 2.5
import QtQuick.Window 2.2

Window {
    visible: true
    Rectangle {
        width: 100
        height: 100
        color: "red"
        Timer {
            property var lastTime
            interval: 1000
            running: true
            repeat: true
            onTriggered: {
                if (lastTime) {
                    console.log(Date.now() - lastTime);
                }
                lastTime = Date.now();
            }
        }
        SequentialAnimation on x {
            loops: Animation.Infinite
            NumberAnimation { from: 0; to: 100; duration: 1000 }
        }
    }
}

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