Frames per second (FPS) is a measure of how many times per second a display’s image is refreshed. It’s important for gaming because a higher FPS can result in a smoother, more responsive experience. To check your FPS in Left 4 Dead, you can use the in-game console. To open the console, press the tilde (~) key. Then, type “fps” and press Enter. Your FPS will be displayed in the top-left corner of the screen.
There are a few things you can do to improve your FPS in Left 4 Dead. First, make sure your graphics drivers are up to date. You can also try lowering your graphics settings or playing at a lower resolution.