File downloads from telegram fails periodically

[knitershift]

Hello, wiz0u. sometimes I get errors while downloading file, now it's like 1/10 downloads ends with error. (on production server)
Could you please check this part of code, that works with memory streem?
The exception describes itself like:
System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.\\n at System.IO.MemoryStream.set_Capacity(Int32 value)\\n at System.IO.MemoryStream.EnsureCapacity(Int32 value)\\n at System.IO.MemoryStream.Write(Byte[] buffer, Int32 offset, Int32 count)\\n at System.IO.MemoryStream.WriteAsync(Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken)\\n--- End of stack trace from previous location ---\\n at WTelegram.Client.<>c__DisplayClass144_0.<<DownloadFileAsync>g__LoadPart|0>d.MoveNext()\\n--- End of stack trace from previous location ---\\n at WTelegram.Client.DownloadFileAsync(InputFileLocationBase fileLocation, Stream outputStream, Int32 dc_id, Int64 fileSize, ProgressCallback progress)\\n at WTelegram.Client.DownloadFileAsync(Document document, Stream outputStream, PhotoSizeBase thumbSize, ProgressCallback progress)...