It is a good idea to keep your graphics card drivers up-to-date. Driver updates generally include bug fixes, performance enhancements and even new features. By using the latest drivers you will experience fewer issues with games, especially newer games that take advantage of key features of the NVIDIA's drivers and GPU.
NVIDIA makes this easy by providing a tool called "GeForce Experience". You can find this application at the NVIDIA GeForce website. Just click on the Download button and follow the instructions to install the software.
If you do not want to install and use the GeForce Experience software, you can also use this same site to manually download and install the drivers for your GPU. If you are unsure about which NVIDIA GPU you have or are uncomfortable with manually installing drivers, we recommend that you use the GeForce Experience application instead.
NVIDIA's GeForce website (as of June 2017)