Ironically, having the ping counter on can slightly increase system overhead. Turn it off in the Game UI tab once you've verified your connection is stable.
Manually select the server region with the lowest "ms" in your Game settings rather than leaving it on "Auto". How To Get 0 Input Delay & 0 Ping Fortnite Chap...
This is the most effective change you can make. Avoid Wi-Fi entirely to eliminate packet loss and jitter. Ironically, having the ping counter on can slightly
Ping is the time it takes for data to travel to Epic's servers and back. How To Get 0 Input Delay & 0 Ping Fortnite Chap...
Input delay is the lag between pressing a key and seeing the action on screen.