I have been on Steam for a few years, and whenever I try to play a 3D game I get extremely low FPS, the highest being 20, and dropping down to as low as 3. But whenever I play a 2D game, it's fine. Games not downloaded through steam work normally, which confuses me how steam is creating this problem. I have 12 GB of RAM installed on my laptop and tried to use as much RAM as I could allow on the games through the steam options.