I have 100Mbps/10Mbps connection.
If I open any torrent, with download speed of 50kB/s, my connection goes down to 25Mbps immediately, and any website is really slow to load, even if it is just text.
I tested my speed on speedtest.net, and before using torrents the speed was the expected ~100Mbps, but after starting a very slow torrent, the speed drops to 25Mbps on speedtest.net, and I can barely open any website now. It basically is same as I was using 20kbps dial up modem right now! Even if I close the torrent, the speed doesn't get back to normal for a while.
What is happening? I noticed this behaviour only a week or two ago, and I have never had problems like this before.
Is my ISP secretly limiting my bandwidth when I try to use torrents?
I don't have a router, just a cable from my computer directly to the socket in the wall.