system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does my internet go so much faster when downloading from Steam or a torrent?

Compared to normal downloading, watching videos and browsing, the download speed increases by about 8 times when downloading from steam, and up to 12 times when downloading a torrent. Why is this?
gpt
Your download speeds depend both on your connection to the server and the server's capacity.  If you're connecting to a server on the other side of the world, you'll probably get a crappy download speed, even if both you and the server have a super fast connection to your ISP. Because of this, large networks like Steam have data centres all over the world that replicate the same content. This is called a Content Delivery Network or CDN. This means that you'll always connect to a Steam server that's close to you and that you'll have a good connection. 

Regarding BitTorrent, you are always downloading from multiple other users simultaneously. So even if your connection is slow to one peer, you can make parallel connections to other peers. Together a lot of slower speeds can add up to quite a lot. Also you might get someone who is on the same network as you. The speed would be super fast in that case, since there is only minimal routing involved.