Menu Lag

Hi, I thought I had this one solved, but when I have any other thing open that isn't ghosts, I get hard, lag in the menus. Doesn't matter what the menu is. Just lag for dayz. Any solutions?

*EDIT*
I have a GTX 550 TI. Not sure if that's needed, but just in case.

For ghosts you have to wait a month or 2 Because IW are working on a
Patch that Will Fix Lag for those who have weaker GCards (Graphics) for them to get more FPS and fix all the stuttering


Just gotta wait M8te even i get menu lag but it goes after 10seconds