What i need to fix so i dont have lags?

[ZombinatoRR 18]

Hey guys :)

I play on really low graphic settings in order not to have any lags,still some times i encount some...can anyone tell me what i need to upgrade[buy] so i can play it nicely :) ?

My pc specs :

Hey guys :)

http://gyazo.com/4a31891d0b537e3416735a55dc600d21

 

[Aamunkajo 110]

Processor, atleast i5. And cant see your gpu from that picture.