After searching for your files you may have, say 8 users with the file you want.
The bandwidth for the file may be 926, but if you click the + symbol next to the title so all the users are available to be seen you'll probably notice that a lot have a bandwidth of just 1, but there's 1 person with a bandwidth of 3000 which brings up the overall to 926.
When you want to start downloading the file don't click on the main title, click on the individual user with the high bandwidth.
Example (I choose this image because i knew it had a lot of users, forget about the file name):
Almost every time, i connect to the fastest uploader and my download speed is greatly increased.
Sorry if this has been said before
Edit: Added the image example because i was bored!
Edit2: domodude was not happy with my use of the word 'average' so i changed it to overall. Not that it makes a difference. Just forget about it being in bold.