There are a few things I would recommend for your situation.
- I strongly recommend that you get a VPN service such as PrivateVPN.
This will not only keep your identity away from copyright trolls, but it will also add a layer of protection to connections coming from your computer, to such a point where even your ISP cannot see what you are doing online. Because of this, you can bypass the throttling mechanisms that your particular ISP puts into place. Most importantly, it will help you avoid getting notices from copyright trolls, which can become rather costly.
- Don't worry about the duplicates.
We are currently not penalizing people for duplicates other than to have their duplicate torrent removed because we are well aware that searching for the original is not always an easy task, especially considering that the originals are not always properly labelled in the first place.
- You're welcome!
I took the liberty of going through your profile and putting a freeleech on the large torrents that you are downloading so that they do not count against your ratio, and will also go through your profile and freeleech and/or promote other torrents that qualify for it to help optimize your upload traffic. As well, I left you a rather generous SBP donation (given your account history) as a way of thanking you for making a genuine effort at contributing to the site. This should help solve your immediate situation.