Fastest image upload into SQL database

Hello I am trying to upload an image (screenshot from desktop) to SQL database as fast as possible. I would like to optimize my current procedure in terms of speed:

bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width,
                       Screen.PrimaryScreen.Bounds.Height,
                       System.Drawing.Imaging.PixelFormat.Format32bppArgb);
gfxScreenshot = Graphics.FromImage(bmpScreenshot);
gfxScreenshot.CopyFromScreen(Screen.PrimaryScreen.Bounds.X,
                                    Screen.PrimaryScreen.Bounds.Y,
                                    0,
                                    0,
                                    Screen.PrimaryScreen.Bounds.Size,
                                    CopyPixelOperation.SourceCopy);

byte[] imageBytes = convertImageToByteArray(bmpScreenshot);
MemoryStream mem = new MemoryStream(imageBytes);
using (Bitmap bmp1 = (Bitmap)Image.FromStream(mem))
{

     ImageCodecInfo[] codecs = ImageCodecInfo.GetImageDecoders();
     ImageCodecInfo jgpEncoder = codecs[1];

     System.Drawing.Imaging.Encoder myEncoder =
     System.Drawing.Imaging.Encoder.Quality;

}

  using (MemoryStream m = new MemoryStream())
                    {
                        EncoderParameters myEncoderParameters = new EncoderParameters(1);
                        EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 23L);
                        myEncoderParameters.Param[0] = myEncoderParameter;
                        bmp1.Save(m, jgpEncoder, myEncoderParameters);
   using (Bitmap bmpLast = (Bitmap)Image.FromStream(m))
                        {
                    string query = "UPDATE ScreenCapture SET ScreenCapture=@Image,BroadcastTime=@BroadcastTime WHERE ID = 1";
                    SqlCommand sqlCommand = new SqlCommand(query, SQLconn);
                    ImageConverter converter = new ImageConverter();
                    byte[] beforeUpload = (byte[])converter.ConvertTo(bmpLast, typeof(byte[]));
                    sqlCommand.Parameters.AddWithValue("@Image", beforeUpload);
                    sqlCommand.Parameters.AddWithValue("@BroadcastTime", DateTime.Now);
                    SQLconn.Open();
                    sqlCommand.ExecuteNonQuery();
                    SQLconn.Close();
                }
            }
        }

It now takes me about 1 second to upload and download on client side, which is not so efficient in my case. If anyone have idea how this procedure is possible to make faster I would be glad to know.

The image has around 60 KB, which is quite a lot.

Edit: Profiling - Performance and Diagnostics in Visual Studio 2013
Method I posted has following usage:
40,8% - byte[] imageBytes = convertImageToByteArray(bmpScreenshot);
10,4% - MemoryStream mem = new MemoryStream(imageBytes);
37,8% - mp1.Save(m, jgpEncoder, myEncoderParameters);

From method captureUpload which takes 93.6% in System.Windows.Forms.ni.dll is:
69.9% System.Drawing.ni.dll
26.8% convertImageToByteArray
8.8 PresentationFramework.ni.dll

In method convertImageToByteArray takes 26.8% on return ms.ToArray()`