Hi, I will be glad to answer your questions.
Part of what makes a good gaming computer is the video card. It's the main tool used to display rich graphics and shadow effects.
Otherwise for your laptop, the first thing I would upgrade is the memory.
Other than that, the processor may be a bit tricky since it may be at the max already.
You do have a great video card already so the memory alone would be enough to help the games speed up.