Temporary Shape Visualization

Hello everyone. I am new to this repo. I am trying to create temporary shape visual while drawing line for my mini CAD program. This is my code snippet that updates and redisplays line while mouse moving. But if i move mouse fastly, it crashes. How to solve this problem properly? Thanks.

bool showTempPreview(const gp_Pnt &startPnt, const gp_Pnt &endPnt)
{
    // Early null checks
    if (context_.IsNull() || view_.IsNull())
    {
        return false;
    }

    // Check if points are too close (would create invalid edge)
    double dist = startPnt.Distance(endPnt);
    if (dist < 0.001)
    {
        return false;
    }

    // Create the temporary edge
    BRepBuilderAPI_MakeEdge edgeBuilder(startPnt, endPnt);
    if (!edgeBuilder.IsDone())
    {
        return false;
    }
    TopoDS_Edge tempEdge = edgeBuilder.Edge();
    if (tempEdge.IsNull())
    {
        return false;
    }

    if (!tempPreviewActive_)
    {
        // First time: create new line object
        tempLine_ = new AIS_Shape(tempEdge);

        // Set dashed line style
        Handle(Prs3d_LineAspect) lineAspect = new Prs3d_LineAspect(
            Quantity_NOC_CYAN, Aspect_TOL_DASH, 2.0);
        tempLine_->Attributes()->SetLineAspect(lineAspect);
        tempLine_->SetDisplayMode(AIS_WireFrame);

        context_->Display(tempLine_, AIS_WireFrame, -1, false);
        tempPreviewActive_ = true;
    }
    else if (!tempLine_.IsNull())
    {
        // Update existing line
        tempLine_->SetShape(tempEdge);
        context_->Redisplay(tempLine_, true);
    }

    return true;
}