I feel like I've make suggestions above and I stand by them. Are you happy with the suggestions I've made or do you have questions/concerns? I feel like I'm just saying the same thing all over again, but I'll have a go at justifying my suggestions again:
The whole system is low-mid range. Unless you have the cash to fork over for an entirely new system, you won't always be able to game on high settings.
However, the good news is that the majority of the system is still reasonable. The only thing that's holding you back from a decent gaming experience is your video card, it's an absolute bottom of the line. That's why your gaming has been so terrible.
I've suggested above and I stand by my suggestion: buy a decent PSU (powersupply) and a decent mid-range graphics card. That'll give you a perfectly decent and well balanced gaming machine. It'll be miles and miles ahead of your current set up which is totally hamstrung by the video card. If you get the R9 270 I suggested above you'll have a system which is faster than both the PS4 and XBone. You also have the option of buying a CPU cooler and overclocking the CPU (once you have a better powersupply). Google overclocking if you want to find out more.
Here's what I'd do:
- Decent PSU - Corsair CS600W (that's a steal currently at only $50 including MIR)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028
- Decent Graphics Card - R9 270 - $180 -
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127769
OPTIONAL, if you want to have a go at Overclocking:
- CPU Cooler, CM 212 EVO ($35).
ONCE DONE: You have a decent mid range gaming system.
LATER: when you find it's not cutting it for you anymore. Sell your current system (you could put your old 610 Graphics card and PSU back in the machine and keep the upgrades for your new build) - and build yourself a new system.
You have other options, but that's what I'd do.