It should also be noted that some ISP's (depending on where in the world you are) will throttle a user's network traffic when they see P2P traffic across their network. If this is the case, your best plan of defense (for a few reasons) is to invest in a VPN. This will hide your traffic from your ISP, and will give you an extra layer of protection while on the internet.
Also, looking at the torrents in your profile, it does not seem like there are any leechers actively downloading the content. This could be another aspect of the problem.