Basic principles of optimizing a bittorrent client

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These are the basic principles of optimizing a bittorrent client, like Transmisssion, for speed:
Choose a proper port to avoid ISP blocks and conflicts with other programs
Forward that port through any software firewall and router to allow incoming connections
Adjust internal settings based upon upload capacity of the internet connection to allow room for outgoing communications and to distribute upload efficiently.
There are some programs that claim to optimize speed in Transmission. Such programs are a scam and generally contain adware or spyware. I have seen it said, by the developers of all bittorrent programs, that nothing will increase your download speed in a bittorrent client more than the basic steps set forth herein.