It looks like utorrent just can't seem to handle high bandwith connections.Īs far as I could track down, the main problem is the disk caching. I have this problem too, and I know a LOT of other people who have it too (all of them are on at least 10mbit connections) - utorrent randomly drops speeds to 0, waits for a while, then gets things going again. Oh and my isp isn't throttling traffic so that's not the case either.

This has been happening through a couple of 1.8.4 and 1.8.5 builds up to the latest. in real time? I wonder what exactly does this setting do apart from capping your desired global torrent upload speed? And if I set it to 0 (unlimited) it starts to drop and then if I set it back it goes up and so on. One more thing I noticed which is very strange, when the drop was happening I tried setting a global up limit to let's say 2300kb (I'm on 20/20mbit) it immediately rose again. Then I thought maybe my disk couldn't handle it anymore so I raised the cache and disabled anything that tries to reduce memory usage so it truly uses the cache and it didn't help either. First I suspected my isp but whenever it happened I quickly tried maxing out my connection with some transfer or a speedtest and it worked fine. Speed drops drastically from max to 0,1kb/s on all active torrents and then very fast back up again. I have a problem with random upload speed drops (sometimes even download but not so often).