There is a very long thread on the India Broadband Forum about the same. I noticed it for myself today. I was trying to download a regular file with enough seeders… the speeds would not go above 40KBps on a 1mbps line. I tried again with some other torrent files. Same result. This is in addition to massive disturbance in the line that happens during the whole process. Even pinging to an IP starts delivering connection lost messages.

I am not a heavy user of Bittorrent but this is still massively annoying. I ended up downloading LibreOffice using a HTTP link. This is not something I like to do considering I am downloading a legit file that is provided to me for free and bandwidth costs money to someone somewhere.