100 % cpu usage

[Vipe Uberstike]

While i am playing some games like battlefield or warface my cpu gets to 100% usage and causes me lag .These are my computer specs .intel(R) Pentium(R) CPU G2030 @ 3.00GHz 3.00GHZ I have An amd R9 200 SERIES graphics gard

 

[ulysses35]

You need scale back some of the settings you game at. The CPU you have is a fairly basic dual core chip

 

[Zero Hero]

Yea you have low end CPU. As a gamer you need to lower settings and update your rig to 4x chip to really game.

 

[Max Grinberg]

Are you using CPU coolers?
If yes, then you need to clean CPU cooler and apply new thermal paste. Overheating also creates these problems.

I agree.

Also you can try overclocking your CPU (not recommended)
Another soulution can be killing background processes (E.g Skype, Web browser, Media player)