If you wanted a gaming laptop then you should of bought a "gaming laptop". Don't expect any laptop with a APU to do very well in gaming.
Also, notice how it says "up to" 3053MB? That means it can use "up to" that much, but unless you have that much free RAM in your laptop then it won't come close. I would suggest upping the laptop to 8GB's RAM so it can utilize a little bit more graphics memory.