Problem displaying LineSeries in WPF

I'm using the library extensively to display spectral data, we just started noticing that our LineSeries appear to have little breaks in random places. We think maybe this is caused by the fact that we have more Datapoints than we have pixels in our display. Has anyone else run into this, or have any ideas how to fix it. As an example, in created a simple line series:

for(var i = 0; i < Model.Width; i++)

{

lineSeries.Points.Add(new DataPoint(i, 2));

}

in that example my Model.Width ends up being 1836, and my Monitor is 1920, and I see a bunch of these little breaks.

if I do:

for(var i = 0; i < Model.Width - 100; i++)

{

lineSeries.Points.Add(new DataPoint(i, 2));

}

The line appears perfect, with no breaks.

I'm attaching images of each.