Refresh rhino preview canvas

Hi,

I am running separate Task in SolveInstance of grasshopper component, I collect some pointclouds and then I display pointcloud through (I also override boundingbox):

public override void DrawViewportWires(IGH_PreviewArgs args) {
    args.Display.DrawPointCloud(cloud, 1);
}

The geometry is only displayed when I rotate or do smth in rhino viewport.
I tried to refresh rhino canvas

        base.ExpirePreview(true);
        base.OnPreviewExpired(true);
        Rhino.RhinoDoc.ActiveDoc.Views.Redraw();
        Rhino.RhinoDoc.ActiveDoc.Views.ActiveView.Redraw();

But it does not help.

Full code is here:

 protected override void SolveInstance(IGH_DataAccess DA) {
            bool run = false;
            DA.GetData(0, ref run);
            Plane plane = Plane.Unset;
            int time = 60;
            double dist = 1;
            DA.GetData(1, ref time);
            
            DA.GetData(2, ref dist);
            DA.GetData(3, ref plane);

            cloud = new PointCloud();
            bbox = new BoundingBox();

            double[] frame = new double[12] {
      plane.Origin.X,
      plane.Origin.Y,
      plane.Origin.Z,
      plane.XAxis.X,
      plane.XAxis.Y,
      plane.XAxis.Z,
      plane.ZAxis.X,
      plane.ZAxis.Y,
      plane.ZAxis.Z,
      plane.YAxis.X,
      plane.YAxis.Y,
      plane.YAxis.Z,
      };


            if (run) {
                //run in other thread


                System.Threading.Tasks.Task.Run(() =>
                {
                    g3.DMesh3 dMesh3 = FastScan_Get_Read(time,frame,dist);
                   
              
                    var g3box = dMesh3.GetBounds();
                    bbox = new BoundingBox(g3box.Min.x, g3box.Min.z, g3box.Min.y, g3box.Max.x, g3box.Max.z, g3box.Max.y);


                    for (int i = 0; i < dMesh3.VertexCount; i++) {
                        var v = dMesh3.GetVertex(i);
                        var c = dMesh3.GetVertexColor(i);
                        int color = (int)(c.x * 255.0);
                        cloud.Add(new Point3d(v.x, v.z, v.y), System.Drawing.Color.FromArgb(color, color, color));
                    }

                });

                GC.Collect();
                GC.WaitForPendingFinalizers();
                

                DA.SetData(0, cloud);
                base.ExpirePreview(true);
                base.OnPreviewExpired(true);
                Rhino.RhinoDoc.ActiveDoc.Views.Redraw();
                Rhino.RhinoDoc.ActiveDoc.Views.ActiveView.Redraw();
  
            } else {

                GC.Collect();
                GC.WaitForPendingFinalizers();
            }
            Rhino.RhinoDoc.ActiveDoc.Views.Redraw();
            Rhino.RhinoDoc.ActiveDoc.Views.ActiveView.Redraw();

        }

To reiterate the connected output components needs to be somehow updated, because the code is running in a separated thread.

Does someone knows how to update connected components? For now I manually have to replug wires.