That depends on the quality of your Internet connection and the number of quality peers (users seeding) for your torrent file. The number of peers can be found below the player window when you load a torrent file into https://utorrent.com/lite. If you see a ‘Low peers’ dialog next to the number of peers, then you may experience buffering or may not be able to play the file at all. Some potential solutions are a. Try accessing the torrent again at a later time to have better luck at more peers and b. Try finding a different torrent file or magnet link for the same file to have better luck at getting peers.