RAM can directly effect game performance, it's much slower and less efficient when your system has to use virtual memory, than to use physical RAM. To oversimplify, it eats up bandwidth and CPU cycles, that effects system performance as a whole. Plug notebook PCs into an AC adapter to give the graphics card more power. Downloadable applications - There are a variety of software applications available to monitor FPS. Consult the technical specifications of your graphics card to check compatability. Nvidia GeForce Experience - Systems using a supported Nvidia graphics card can use GeForce Experience to monitor FPS. If that sounds like a lot, consider a driver-updater tool. Updating your graphics driver ensures that you’ll always have the newest features and control