1. How does it work vs Bittorent

Source: Torrent streaming vs downloading

The simplicity and speed Torrentio offers is quite great and you can access to a wide range of TV Shows, movies, and other streams as well. So if you are a entertainment enthusiast then Torrentio could be the best provider of it.

Deep Dive into the bittorent protocol

Torrentio vs Bittorent

Torrentio is an add-on for Stremio that allows users to stream torrents as they download, while BitTorrent is a peer-to-peer file-sharing protocol used for downloading and sharing files. Torrentio focuses on streaming content immediately, whereas BitTorrent typically requires the entire file to be downloaded before access

.torrent and Magnet links

Torrentio uses both .torrent files and magnet links to stream content directly from torrent sources. This allows users to access a wide range of media without needing to download the files manually.

Good link: https://medium.com/@hedhav.haresh/a-deep-dive-into-the-world-of-torrents-6f6769dd00b6

Sequential downloading instead of downloading random items and then reassemble. This is what torrentio does 

• Stremio does sequential downloading of torrents in order to stream them, sequential downloading is always slower then normal torrent downloading, to put it bluntly: a normal torrent download does not care what part of the torrent it downloads, so it will always download whichever part is currently available at higher speeds, with sequential downloading the torrent parts that are one after the other are preferred, this obviously slows down the speed but is better for streaming

• the second thing you are not considering is the maximum connections used, Stremio has a small number of maximum connections enabled by default, this helps to not clog your internet (especially when on WiFi which has a limited number of consecutive connections), if you are on Desktop though (as opposed to Android), you can tweak the torrent settings manually by following this guide

• the third thing, although you probably did consider this, is that you need to choose the torrents with more peers (the little human icons in the stream results) and also with a lower file size (in MB / GB) for improved streaming speeds