[Galanwe]

I know that already... and it is exactly what I tested and confirmed here https://news.ycombinator.com/item?id=44249137

You can spawn multiple connections to S3 to retrieve chunks of a file in parallel, but each of these connections is capped at 80MB/s, and the whole of these connections, while operating on a single file, to a single EC2 instance, is capped at 1.6GB/s.