Ye that card is pretty much the same power as what a APU has inside it nowadays and it aint good.
My big brother has a 800 series APU and he was having the same issues you posted above. He has a GTX 960 now and can play single player games fine though he understands his CPU can not handle CPU intensive games so Skyrim and Fallout 3/ New Vegas ultra will do him for now.
Save up for a Nvidia GTX 900 series GPU and make sure you have a decent PSU.