If your download is getting stuck, then it could also be due to failing trackers. Failing trackers? That means the tracker is stopped functioning due to reasons like the torrent deleted from trackers or the trackers died perhaps. They might also experience some downtime. Sometimes torrents are removed from a tracker if they are older than a year. There are many such reasons, unfortunately.
In the case of some downloads, you may end up downloading some unnecessary files. But, some clients like uTorrent allow us to view all the individual files of a download. You can unselect some unnecessary files in a download and increase the speed of your download. Familiarizing yourself with all the settings in your BitTorrent client can also help you in managing your torrent downloads correctly.
Technically speaking, 10th and 11th might not be good tips, but they are something you should always keep in mind nevertheless. If you have any other easy-still-technical tips to increase torrent download speed, feel free to share them in the comments below.