Low FPS In All Games, Plus Random FPS Drops

You might be expecting too much out of your laptop, those numbers are actually higher than I expected. It's clear that your GPU and CPU are maxing out at certain points which is a good thing because you know they are running. Make sure you are in high performance mode so that the operating system isn't throttling the CPU.

Mind trying to go for the NVIDIA control software and set the gfx optimized for performance instead of quality, that u may gain 10+ fps. In FPS games the frames per second are more important than graphic quality if your laptop is not strong enough.

Your graphics card really isn't the problem 30-45 frames is what most games on console play on (unless its running and old engine like COD so you can get 60). Your real problem is your processor and it works like this. Your processor is running at 2.3GHz and it can over clock its self to 3.3 GHz for the purposes of battlefield it needs to be at about 3GHz all the time. So this is what is happening to you.
It starts off at 2.3 then it looks and sees that oh shit this isn't going to cut it i'm gonna step it up but it doesn't go straight to 3.3. it only gos to 2.4 then looks again. Then to 2.5 and again and again and again this process takes time and during this time while your processor figures this out that it needs "more" you get to eat suck frames. worse yet if you turn and look at a wall or something where you don't have a bunch of crap going on. it will say "oh i guess we are done now" and drop right back down only to repeat this process.

Things you can do to make this less of an issue. lower for FOV this will reduce some of the crap you have to render and thus that's less your processor to keep up with. If you don't see the people moving around then it doesn't have to think as much about them. Next lower your render distance this will suck balls if your sniping because people far away from you wont show up. BUT less things going on in front of you the better this is going to play out.
There are a few options that though graphical aren't entirely reliant of your card, Physics for one. if you have the option turn it off or down less random stupid bricks flying everywhere the better. i'm sure your getting the trend by now.

your card probably CAN do just fine i know i ran bf3 on high with my didly little 560ti its not an issue. you will also have the same problems in games like Planetside 2, saints row, GTA, and basically anything were you have a large world to screw around in. Because every step you make your processor has to forget everything it was doing and think about it all over again for a certain area around you.

"closed level" games will have much fewer issues. Bioshock Call of duty, Team fortress, Warframe, Most car games (ironically), and metro last night will hardly use your processor that's all GPU right there.

Things your GPU HATES TO DO your gpu hates to do anti-aliasing and shadows. it hates it gpu's just have a hard time thinking about all that all the time. its allot to think about turning these to low almost ALWAYS make for a jump in frames if you're GPU bound. Second, Resolution - how many tiny ass pixels its going to have to think about on your screen. pixel ratios work like this 1024x768 is 786432 pixles your gpu has to CONSTANTLY CHANGE AND THINK ABOUT. if you went to 1024x769 it would add another 1024 pixles to think about when you bump up your resolution even a little bit your probably adding hundreds of thousands of more things for it to be think about. and you have to ask yourself should i make it think about all of these pixels OR would i rather it just work on somthing else that would make this experience better for me. There are many resolutions that fit your monitor you might want to try one of them that is lower.

640×360, 854×480, 960×540, 1024×576, 1280×720, 1366×768, 1600×900, 1920×1080 are all for you lowing it down to 1600x 900 would save you 633600 pixles for your gpu to think about. and it will look to you nearly the same at 1366x768 you will see some (Jaggies) around the edges of stuff but your saving 1024512 pixels that's HUGE and you can expect that if you free up that many calculations you can spend them better on other stuff like shadows if you wanted them or smoke effects or whatever.

Did you see if your laptop is indeed running 1920X1080?