WPF Xaml Islands - UWP Map Control pixelated polyline

Question

I'm currently migrating a WPF app from .Net Framework to .Net Core (3.1). This application currently uses the MapControl from the Microsoft.Maps.MapControl.WPF assembly. The goal is to migrate this control to a UWP MapControl from the Microsoft.Toolkit.Wpf.UI.Controls assembly. One of the requirements, is the ability to draw Routes/Polylines on the map.

Following Microsoft's documentation (present in https://learn.microsoft.com/en-us/windows/uwp/maps-and-location/display-poi) I was able to draw lines on the map. However, the end result is not as desired (visually): the lines appear pixelated, as seen in the image bellow:

Current Result

How can I give a smooth look to this lines? Is there any way to apply anti-aliasing to them? After an extensive search online I was not able to find any function or property that allows for smooth rendering of this elements. What can I do to achieve this?

EDIT:

The .Net Framework way (using Microsoft.Maps.MapControl.WPF) of creating the MapPolyLine:

            MapPolyline routeLine = new MapPolyline();
            routeLine.Locations = myLocationCollection;
            routeLine.Stroke = MY_COLOR;
            routeLine.StrokeThickness = 5.0;
            routeLine.StrokeLineJoin = PenLineJoin.Round;

The .Net Core way (using Microsoft.Toolkit.Wpf.UI.Controls) of creating the MapPolyLine:

        var myPolyLine = new MapPolyline
        {
            Path = myPath,
            FillColor = MY_COLOR,
            StrokeColor = MY_STROKE_COLOR,
            StrokeThickness = 6,
            ZIndex = 1
        };

        myMap.MapElements.Add(myPolyLine);