[ubuntu] general laggyness

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http://ubuntuforums.org – ok i have just installed Ubuntu 12.04 amd64 but the mouse is seriously laggy and for some reason moving the mouse causes other stuff like movies and animated gifs to stall and lag also I should say that it was also laggy on the Live CD and it works perfectly well with Windows I am relativly new to Ubuntu but I have noticed that Graphics is set as unknown in Detail and my computers spec CPU: i7 2700k Ram: 16GBs MoBo: p8z68-v /gen 3 (Hardware)