: Open the in-game menu by pressing Esc , go to Settings , and change Graphics Quality from "Auto" to "Manual." Slide the bar to the left to reduce the load on your GPU.
: Use a wired Ethernet cable if possible. If on Wi-Fi, move closer to your router or restart it by unplugging it for 30 seconds. How to Find "Lag-Free" Servers Brookhaven Lag Server
If a specific server is stuttering for everyone, it’s likely a server-side issue. You can try these methods to find a better experience: How do you "actually" Reduce lag on already laggy places? : Open the in-game menu by pressing Esc