After delving into the topic, I found that buying a gaming chair won't directly increase your Frames Per Second (FPS) in games. FPS is affected by the hardware and software of your computer, not your seating arrangement. However, a good gaming chair can enhance overall gaming experience by providing comfort and support, which indirectly might improve your performance. So, while it might not boost your FPS, it could potentially make your gaming sessions more enjoyable and efficient.