If you are having a lagging problem or cant log in then try it with Kill Ping. It is much better than wtfast. You can get it from here.
http://www.killping.com (http://www.killping.com)
1- Download Kill Ping.
2- Make an account by providing a valid email.
3- Activate account by inserting code which will be send to email
4- Enjoy lag free gaming
:) :) ;) ;) :D ;D