Autoflush with chunked encoding caused performance degradation with non-buffered StreamWriter

Author: xplicit

src/ServiceStack.Text/JsonSerializer.cs

@@ -147,15 +147,15 @@ public static void SerializeToStream<T>(T value, Stream stream)
             }
             else
             {
-                var writer = new DirectStreamWriter(stream, UTF8Encoding);
+                var writer = new StreamWriter(stream, UTF8Encoding);
                 JsonWriter<T>.WriteRootObject(writer, value);
                 writer.Flush();
             }
         }
 
         public static void SerializeToStream(object value, Type type, Stream stream)
         {
-            var writer = new DirectStreamWriter(stream, UTF8Encoding);
+            var writer = new StreamWriter(stream, UTF8Encoding);
             JsonWriter.GetWriteFn(type)(writer, value);
             writer.Flush();
         }