Editor.SelectCrossingWindow very slow

[p.zagler]

I am calling Editor.SelectCrossingWindow approx 150 times using 150 different points.

In drawing "A" this operation takes ~ 60ms.

In drawing "B" the same operation takes ~ 10000ms.

My testing code in C# is very simple and just consists of these lines:

var ed = Application.DocumentManager.MdiActiveDocument.Editor;
var sw = Stopwatch.StartNew();
ed.SelectCrossingWindow(new Point3d(58743.2069510254, 150063.307978366, 0), new Point3d(58745.2069510254, 150065.307978366, 0));
....
ed.SelectCrossingWindow(new Point3d(79078.8718360285, 149684.868278114, 0), new Point3d(79080.8718360285, 149686.868278114, 0));
ed.WriteMessage($"Duration: {sw.ElapsedMilliseconds} ms");

Both drawings are zoomed out and the results of 'SelectCrossingWindow' calls  are the same for both. 

What is happening in drawing "B" to cause this huge difference?

Any help or hint is very welcome.

Thanks

Peter

[hak_vz · Accepted solution]

This request should be posted in .NET forum.

[p.zagler]

Thank you.
I have posted the request in the .NET forum.

https://forums.autodesk.com/t5/net/editor-selectcrossingwindow-very-slow/td-p/10651467