Controls stop responding in game

[Lasedar]

Ok, in-game JKA usually I'm fine, no lag, no stuff like that. But, lately in the RoAR server, I've been in the middle of moving somewhere or doing something, and then suddenly my character just does whatever I was doing last, like running backwards or something. My controls don't control my character, and I can't get control of my character for a few sec. Apparently this is totally random, because sometimes it happens, but most of the time I'm. If you have any ideas I'd love to hear them. Thanks

[sadmanZERO]

This is called "lag."