c# - Improve WPF rendering performance using Helix Toolkit -

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i rendering large number of meshes loaded stl , added viewport helixviewport3d object. meshes static in environment. 

// in mainwindow.xaml  <helixtoolkit:helixviewport3d x:name ="viewport" zoomextentswhenloaded="true" margin="250,-15,0,15">  // in mainwindow.cs constructor this.viewport = new helixviewport3d(); foreach(string path in meshpaths){     modelvisual3d meshmodel = loadmesh(path);     viewport.children.add(meshmodel); }

since number of meshes high, rendering performance quite low (it freezes during rotations, hard zoom in...). how can make scene easier rotate , manipulate?


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