Friend needs help with game lag and fps

My friend bought battlefield 4 and he is getting serious lag and low fps, even in single player. He tried turning all the graphics to low but it didn’t really help. He still got about 15 fps. Anyone know the problem?

Specs:
Resolution: 1600x900
GPU: Geforce GTX 650
CPU: AMD a4-3420 apu (dual core) 2.80 ghz
OS: Windows 8
Ram: 16 gb

I’m not sure if the problem is caused by the graphics card, cpu, or something else. Any help is appreciated.

It sounds like your main problem is your cpu from the info you gave me. The other specs are pretty solid. It could also be that your vertical-sync is off. (Which it is by default) that is what happened to me and as soon as I turned it on in the video settings the game ran fine. But if that doesn’t help I suggest upgrading the CPU. I just upgraded to an amd fx six-core 3.9 and it is a total beast. It only cost me about $115 I believe. Well worth it. Stock fan is a little loud though.

Thanks a lot, ill look into that cpu.

most likely a driver issue. I have a similar cpu and it should be fine. Uninstall all nvidia drivers, restart, and download the latest drivers from their site.

Ill have him try that thanks

Tried that and it didnt help… im not sure what it could be.