Performance beginsend in C# socket

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C#

WPF

sockets

(Why Reply Button Not Work? I Have Edit Question and add New Information Every Time Some One Comment)First of All Sorry for my Bad English. I Don't Know a Lot English so Hope Every One Can Understand What I Mean.

Why BeginSend Have High CPU Usage. I Use Core of PSXDownloadHelper Then Create a New Application with New Design. (Every Function/Class/Method in my Program is From PSXDownloadHelper Except Design) so Why in PSXDownloadHelper CPU Usage is under 20% but in my Program at Least 50%.

PSXDownloadHelper Project: https://github.com/KOPElan/PSX-Download-Helper/tree/master/PSXDownloadHelper[^]

My PRoject: https://github.com/rasoulia/PSXDownloader/tree/main/1-%20PSXDownloader_NewVersion[^]

private async void OnLocalFileSent(IAsyncResult ar)
{
    try
    {
        if (_mLocalFile!.FileStream!.Position < _mLocalFile.FileStream.Length)
        {
            byte[] buffer = new byte[1024 * 4];
            _mLocalFile.FileStream.Read(buffer, 0, buffer.Length);
           await Task.Run(() => ClientSocket?.BeginSend(buffer, 0, buffer.Length, SocketFlags.None, OnLocalFileSent, ClientSocket));// The Cause of High Cpu Usage
        }
        else
        {
            ClientSocket?.EndSend(ar);
            _mLocalFile.FileStream.Close();
        }
    }
    catch
    {
        _mLocalFile!.FileStream!.Close();
        Dispose();
    }
}

What I have tried:

The Problem is in Method OnLocalFileSent and Line

ClientSocket?.BeginSend(buffer, 0, buffer.Length, SocketFlags.None, OnLocalFileSent, ClientSocket)

1. Use Socket.Send , Socket.SendAsync but Never Send Data and Only BeginSend Can Transfer Data
2. Add Task.Run to Every Line That Use BeginSend with async/await. Reduce the CPU Usage From 90% to 50%~70~

3. If I Don't Use async/await and Task.Run the CPU Usage Get up to 90% and RAM Usage up to 50%
4. Use Task.Factory.StartNew and BackGroundWorker.
5. USe Task.Delay and Thread.Sleep.
6. Change

 _mLocalFile.FileStream.Read(buffer, 0, buffer.Length); //to 
int b= _mLocalFile.FileStream.Read(buffer, 0, buffer.Length);
//then use the b in buffer.Lenght in BeingSend