QML Mouse drag laggy

[StudentScripter]

Hello,

I've done a simple example of a rectangle which i drag, but somehow the rectangle always laggs behind the mouse/ the position of the rect isn't updated fast enough. What am i doing wrong? How to fix this? (when dragging fast it looks okish but when dragging slow it really feels sluggish and unprecise)

Windows 10, 64bit, Qt6.5, NVIDIA Graphicscard

EDIT: Setting QQuickwindow to Software rendering fixes it, but that really CAN'T be the solution! Because obviously when working with graphics drag and drop using the GPU is important!

#include <QGuiApplication>
#include <QQmlApplicationEngine>

#include <QQuickWindow>
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    QQuickWindow::setGraphicsApi(QSGRendererInterface::Software);
    
    
    QQmlApplicationEngine engine;
    QObject::connect(
        &engine,
        &QQmlApplicationEngine::objectCreationFailed,
        &app,
        []() { QCoreApplication::exit(-1); },
        Qt::QueuedConnection);
    engine.loadFromModule("QMLCourseLesson2Graphics", "Main");

    return app.exec();
}

Here is my code:

import QtQuick

Window {
    id: root
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")


    Rectangle{
        id: myRect
        width: 100
        height: 100
        color: "blue"

        function update(){
            console.log(x + " x "+ y)
            myRectLabel.text = Math.round(x) + " x "+ Math.round(y)
        }


        //anchors.centerIn: parent
        x: 100
        y: 100

        onXChanged: update()
        onYChanged: update()

        Component.onCompleted: update()

        Text {
            id: myRectLabel
            text: qsTr("text")
            anchors.centerIn: parent
        }

        MouseArea{
            anchors.fill: parent
            drag.target: parent


        }

        /*
        // Add the DragHandler for dragging the rectangle
        DragHandler {
            id: dragHandler
            target: myRect // Specifies which item is dragged



            onActiveChanged: {
                if (dragHandler.active) {
                    console.log("Drag started")
                } else {
                    console.log("Drag ended")
                }
            }
        }*/
    }

}