June 2015
Well I FIXED MY LAG all I needed to do was set the game exe to high priority with the possessor you can get there by Alt Ctrl Deleting and going to Details tab do this wile the game is running and right click the game exe "Set Priority" then click on High.I can not say this will fix everyone's but it worked for me.
April 2018
2018 i'm back in the game. But it's doing the same thing to me and it's pretty annoying. But I suggest you get a new graphics card and Put inside your PC and it will make it work better. Im gonna do the same thing.