Slow loading graphs using WPF

Hi. I'm using Oxyplot in a WPF project and am finding that my graphs are taking a while to load / update once there is only a few hundred points in them.

I am plotting 1-4 scatter series onto a time / linear graph. The ItemsSource is set to a collection of DateValues - pretty much a copy of whats in one of the examples.

Any ideas why I'm experiencing this slow down?

What MarkerType are you using? I've realized that the performance can vary noticeably. Try to use "Cross" in MarkerType. Good luck

var lineSeries1 = new LineSeries("Cloud 1")
            {
                Color = OxyColors.Transparent,
                MarkerFill = OxyColors.Black,
                MarkerStroke = OxyColors.Black,
                MarkerType = MarkerType.Circle,
                MarkerSize = 1.5,
                StrokeThickness = 1,
                DataFieldX = "Date",
                DataFieldY = "Value1",
                ItemsSource = data
            };
            var lineSeries2 = new LineSeries("Cloud 2")
            {
                Color = OxyColors.Transparent,
                MarkerFill = OxyColors.Black,
                MarkerStroke = OxyColors.Black,
                MarkerType = MarkerType.Circle,
                MarkerSize = 1.5,
                StrokeThickness = 1,
                DataFieldX = "Date",
                DataFieldY = "Value2",
                ItemsSource = data
            };
            var lineSeries3 = new LineSeries("Cloud 3")
            {
                Color = OxyColors.Transparent,
                MarkerFill = OxyColors.Black,
                MarkerStroke = OxyColors.Black,
                MarkerType = MarkerType.Circle,
                MarkerSize = 1.5,
                StrokeThickness = 1,
                DataFieldX = "Date",
                DataFieldY = "Value3",
                ItemsSource = data
            };
            var lineSeries4 = new LineSeries("Cloud 4")
            {
                Color = OxyColors.Transparent,
                MarkerFill = OxyColors.Black,
                MarkerStroke = OxyColors.Black,
                MarkerType = MarkerType.Circle,
                MarkerSize = 1.5,
                StrokeThickness = 1,
                DataFieldX = "Date",
                DataFieldY = "Value4",
                ItemsSource = data
            };
            var lineSeries5 = new LineSeries("Vertical Visibility")
            {
                Color = OxyColors.Transparent,
                MarkerFill = OxyColors.Transparent,
                MarkerStroke = OxyColors.Blue,
                MarkerType = MarkerType.Square,
                MarkerSize = 1.5,
                StrokeThickness = 1,
                DataFieldX = "Date",
                DataFieldY = "Value5",
                ItemsSource = data
            };

Mainly circles, with only the occasional square. I'll give cross a go but I really need circles!