How to improve my FPS?

[How to improve my FPS?]

Cheers guys, lowering the graphics didn't seem to even make a slightest bit of difference, going to try what Sausage posted later and see if that helps.

[How to improve my FPS?]

Just started playing DayZ and wondering a few things, mainly how to improve my fps.

I average around 20 which is playable but when it comes to a shootout I imagine I am going to get dicked due to the FPS not really being in my favour.

System specs are as follows:

Intel® Core i5-3330 CPU @ 3.00GHz, 3001 Mhz, 4 Core(s), 4 Logical Processor(s)

NVIDIA GeForce GT 630

8gb RAM

Running Windows 8 (Never know these days with windows if that causes an issue)

I am also running with the free version of ARMA 2, not sure if that causes performance issues or not either.

The settings I am running ingame are as follows: