I am not certain that you will be able to upgrade your laptop enough to get FPS 30+. The games that you are playing are very graphics intensive.
Here is the Maintenance and Service Guide for the laptop. You can check the processor and memory upgrade information to see what is recommended. Here is the memory recommended by Crucial Memory. Also, check out the SSD's that they recommend. A SSD will increase system performance a lot. I won't have another computer without a SSD boot drive.
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I am not an HP Employee!! Intelligence is God given. Wisdom is the sum of our mistakes!!