Hi @sapvi, Some of the performance overhead could be because you’re glyphing the points as well as clipping on the CPU. Try removing the VertexGlyphFilter and instead use vtkProperty::SetRenderPointsAsSpheres to make points appear as spheres.
Similarly, the clip can happen on the GPU via vtkAbstractMapper::SetClippingPlanes. This is unless, you want to use the clipped data for further processing.