I use qbittorrent portable. I tried fdm under test system & torrent works good. I hav fdm light installed. I was thinking of installing fdm full with torrent plugin. But dont know how to limit upload. As during tests I noticed sometimes upload was on high side compared to download. I tried changing the settings under fdm torrent but didn't worked. I tried setting the limit to upload traffic & upload connections but doing so resulted in torrent not downloading.