Optimisation Help

Hey guys, was looking for some help optimising my graphics set-up, as I've been really struggling to get decent frames and would love to dive in. Huge fan of the original Insurgency, but my PC is a touch out-dated - any help would be appreciated if at all possible. I've tried a bunch of guides, but never with (enjoyably) playable results.

My hardware:
CPU: 4th gen i3-4130 @3.4GHz
Graphics: 2GB Geforce 960

Thanks in advance, and apologies if this is in the wrong spot

Your PC is quite a lot below minspec as stated on Steam Store page, the minspec as is, is kinda borderline playable with a target of 30FPS avg.