Lower in-game graphics settings
Reduce screen resolution
Disable V-Sync
Cap your FPS
Close background apps
Update your GPU drivers
Restart your PC
Use a wired internet connection
Stop downloads and streaming on your network
Switch to a server with lower ping
Verify game files
Clear shader cache
Disable overlays
Set the game to high priority
Turn off recording software
Lower mouse polling rate
Check for overheating
Update Windows
Reinstall the game if needed