I have seen a lot of people asking and having problem with FPS or lag
My fps was 12 baaaaad

Now 61-41 (RL +bomb make lagg) SO TODAY I WILL POST MY SOLUTIONS
1. Update your vedieo card

easy
2.Go sitting change it to medium quality

you can keep it high if you have RAM
3.Use razer game booster to kill programs in background
4.clean your RAM by clean Internet Explorer history
5.do not use YouTube (prefer to download music to your computer)

6. Calling skype use a lot of fps so if no needs for it close it
7.And thank me (optional)