Blazor TreeGrid - High-performance Component

@using Syncfusion.Blazor.TreeGrid

<SfTreeGrid DataSource="@TreeData" IdMapping="TaskID" ParentIdMapping="ParentID" TreeColumnIndex="1">
    <TreeGridColumns>
        <TreeGridColumn Field="TaskID" HeaderText="Task ID" Width="80" TextAlign="TextAlign.Right"></TreeGridColumn>
        <TreeGridColumn Field="TaskName" HeaderText="Task Name" Width="145"></TreeGridColumn>
        <TreeGridColumn Field="Duration" HeaderText="Duration" Width="100" TextAlign="TextAlign.Right"></TreeGridColumn>
        <TreeGridColumn Field="Progress" HeaderText="Progress" Width="100"></TreeGridColumn>
    </TreeGridColumns>
</SfTreeGrid>

@code{
    public List<SelfReferenceData> TreeData { get; set; }

    protected override void OnInitialized()
    {
        this.TreeData = SelfReferenceData.GetTree().Take(30).ToList();
    }

 public class SelfReferenceData
    {
        public static List<SelfReferenceData> tree = new List<SelfReferenceData>();
        public int TaskID { get; set; }
        public string TaskName { get; set; }
        public String Progress { get; set; }
        public int Duration { get; set; }
        public int? ParentID { get; set; }
        public SelfReferenceData() { }
        public static List<SelfReferenceData> GetTree()
        {
            if (tree.Count == 0)
            {
                int root = -1;
                for (var t = 1; t <= 10000; t++)
                {
                    Random ran = new Random();
                    string progr = (ran.Next() % 3) == 0 ? "Started" : (ran.Next() % 2) == 0 ? "Open" : "In Progress";
                    root++;
                    int rootItem = tree.Count + root + 1;
                    tree.Add(new SelfReferenceData() { TaskID = rootItem, TaskName = "Parent task " + rootItem.ToString(), Progress = progr, Duration = ran.Next(1, 50) });
                    int parent = tree.Count;
                    for (var c = 0; c < 2; c++)
                    {
                        root++;
                        progr = (ran.Next() % 3) == 0 ? "In Progress" : (ran.Next() % 2) == 0 ? "Open" : "Validated";
                        int iD = tree.Count + root + 1;
                        tree.Add(new SelfReferenceData() { TaskID = iD, TaskName = "Child task " + iD.ToString(), ParentID = rootItem, Progress = progr, Duration = ran.Next(1, 50) });
                    }
                }
            }
            return tree;
        }
    }
}