In online games that require quick reactions, you not only need to react quickly using your mouse, keyboard or controller, but you also need your PC or game console to communicate quickly and smoothly with the game’s server. This is where a good ping is vital.
The definition of a good ping varies, depending on the performance of game servers as well as other factors. Generally speaking, a ping response of over 100 milliseconds (ms) is considered poor. Most gamers should strive for the lowest ping possible, as this means network devices are able to transfer signals back and forth in less time.