Qt QML Map Antialiasing Problem

[Moon4Walker]

I created a map using the "osm" map plugin in one of my qml files. I used qquickwidget to show the qml file in mainwindow.
My problem is that my map is not clear.
Even though I antialiasing:true to my map, my map is not clear.
Sorry for my bad english.

    Map {
        id: map
        anchors.fill: parent
        plugin: Plugin { name: "osm"}
        center: QtPositioning.coordinate(40.991624,39.776527)
        zoomLevel: 15
        antialiasing: true
       }