Real time graphing drawing graphics issue

Hi,

I am seeing intermittent charting issues when plotting real-time data. The issue seems to be related to programmatic ranging of the x-axis, as I am unable to replicate the behavior when setting AutoRange="Always", and removing the programmatic ranging code.

I captured the behavior in a screen recording that can be viewed in the OneDrive link below (the file was too large to upload in this post). The behavior is replicated at time 0:00:01. To me, it seems like the x-axis was somehow stretched in a section of the chart as the temporal distance between two consecutive data points seems to increase temporarily. In the video you can see that this behavior is transient and seems to rectify quite quickly; scrolling back to the time at which the glitch occurs, there seems to be no abnormalities in the data. The link to the video is below:

Real-time charting issues

Below is the programmatic ranging method I am using:

private void AutoScaleAxes(double latestXPosition)
{
try
{
// force task to run on UI thread if not already
if (Thread.CurrentThread != _dispatcher.Thread)
{
_dispatcher.Invoke(() => AutoScaleAxes(latestXPosition));
}
else
{
var lowerBound = Math.Max(0, latestXPosition – DisplaySeconds);
if (Plots?.FirstOrDefault()?.DataSeries?.ParentSurface?.XAxes.First() is IAxis xaxis) xaxis.VisibleRange = new DoubleRange(lowerBound, latestXPosition);

var blockFirstScaling = _data.First().Count < 100; // don’t auto-scale first time until we have at least 100 data points
var autoScaleY = (_firstScaling && !blockFirstScaling) ? (!AutoScaleYAxis.HasValue) : (AutoScaleYAxis.HasValue && AutoScaleYAxis.Value);
}
}

Any thoughts on what code be causing this? Thanks!