Aside from having a really fast, non-filtered broadband connection, there are a few ways you can speed up your BitTorrent downloads through simple tweaks. The MakeUseOf blog runs down a few of them. The MakeUseOf poster prefers Windows client uTorrent for its manageability and efficiencty—as do we, and our readers—but most of their tricks can be tackled in any torrent grabber. The list starts out with the obvious stuff, like choosing healthy seeds with lots of peers, and gets down into the nitty gritty, like increasing Windows' allowance of "Max Half Open TCP connections" through a third-party patch:
After running the patch, you have to set the number of connections in your torrent client. For example, in uTorrent go to Options - Preferences - Advanced - net.max_halfopen. Set any number from 50 to 100. But see that net.max_halfopen is set lower than the value set in TCPIP.SYS. Always check if it is still patched because Windows updates sometimes overwrite it.