How to Send and Receive MSMQ messages faster?

Question

I am reading a CSV file line by line. I will process the line and then dump it into another CSV file (simplified version of the problem). I am using MSMQ as a "fire and forget" mechanism. However, it's significantly slower than expected (more than 100%). Is there something I am missing here, like a setting?

I tried to run the Send call in a seperate thread. It didn't help.

Sender code:

    class Program
    {
        static void Main(string[] args)
        {
            string queueName = ".\\Private$\\TestQueue";

            if (!MessageQueue.Exists(queueName))
            {
                MessageQueue.Create(queueName, false);
            }

            MessageQueue messageQueue = new MessageQueue(queueName);
            string path = @"file.csv";

            int lines = 0;
            Stopwatch stopwatch = new Stopwatch();
            stopwatch.Start();
            using (StreamReader reader = new StreamReader(path))
            {
                string readLine;
                while ((readLine = reader.ReadLine()) != null)
                {
                    lines++;
                    messageQueue.Send(new Message(readLine));

                }
            }
            stopwatch.Stop();
            Console.WriteLine("Lines: " + lines);
            Console.WriteLine($"Time: {stopwatch.Elapsed.ToString("g")}");
        }
    }

Receiver code:

   class Program
    {
        static void Main(string[] args)
        {
            MessageQueue queue = new MessageQueue(".\\Private$\\TestQueue");
            queue.Formatter = new XmlMessageFormatter(new[] { typeof(string) });
            WriteToReport(queue);
        }

        private static void WriteToReport(MessageQueue queue)
        {
            StreamWriter writer = new StreamWriter($@"Log_{DateTime.Now:yyyyMMddhhmmssms}.csv");

            while (true)
            {
                Message message = queue.Receive();
                string row = message?.Body as string;
                if(message == null || string.IsNullOrEmpty(row)) break;

                writer.Write(row);
            }
            writer.Close();
        }
    }

Note:

1. I tried to just read the messages in the receiver program without writing them to anywhere. It's still slow.

2. Sending the messages in a seperate thread did not help.

3. Increasing the queue size didn't help.

Shouldn't the Send method be asynchronous? I was expecting it to just Send the message and continue processing.