Hi, I have a MemoryStream created from Python (3.4) *memory_stream = MemoryStream(data_size)* and pass it to a C# library function to get data. *self.the_library.Read(memory_stream)* This definitely works. The problem is, python.exe's memory usage increases over time. Calling *memory_stream.Dispose()* and *memory_stream.Close()* doesn't help. What am I missing? Thanks in advance.