var MAXSTRIPDIM: integer = 512 * 1024; // 512 K

// Save Images with 2MB strips (instead of default 512KB)
const
  TWO_MB = 2 * 1024 * 1024;
begin
  ImageEnView1.IO.Params.TIFF_StripCount := imax((ImageEnView1.IEBitmap.Height * ImageEnView1.IEBitmap.RowLen) div TWO_MB, 1);
  ImageEnView1.IO.SaveToFileTiff( 'D:\Myimage.tiff' );
end;