Set "Power Management mode" to Prefer maximum performance and "Low Latency Mode" to Ultra .
Right-click the Fortnite executable file ( FortniteClient-Win64-Shipping.exe ), go to Properties > Compatibility, and check Disable fullscreen optimizations . *INSANE* Fortnite Chapter 3 Season 3 FPS Guide!
Keep at 100% for clarity, but lower it if you have an extremely low-end PC. View Distance: Set to Medium or Low to reduce CPU load. Shadows / Anti-Aliasing: Set to Off . Textures / Effects: Set to Low to maximize performance. V-Sync: Off to prevent frame capping and input lag. Windows & Hardware Optimizations Set "Power Management mode" to Prefer maximum performance