Limit your ratio to 1.0 on your torrent does not help you increase your speed when speed depends on peers and your connection, your port forwarding..... Ratio control just helps your torrent come into queue when it reaches 1.0
Here are a solution that I can help you:
- Come to Preferences -> Queueing to see if you set ratio to any specific value or not. Change the ratio setting if you find something wrong.
- Right click on your torrent to see what's the matter with it. You can delete your torrent and add it again so your global settings will have effect on it immediately.
If you don't have many torrents that need to be seeded, exit utorrent and delete .dat files in roaming utorrent folder, type %roaming\utorrent to browse that folder, start utorrent again, you will have default settings. (you may add those torrents again because there're not many torrents)
Don't modify anything in utorrent or in any client if you don't know what the change is. But there are lots of settings that need to be changed. Just change them when you're required to do so, say, disabling your DHT, disabling Peer Exchange for example....