: This security feature can cost up to 28% of your FPS on low-end systems. Go to Settings > Privacy & Security > Windows Security > Device Security > Core Isolation and toggle "Memory Integrity" OFF .
: Set all of these to Off . Shadows alone can cost over 50% of your performance. Fortnite FPS Boost ULTRA LOW END PC & LAPTOPS! ...
: If the game still stutters, lower this to 50–75% . This renders the game world at a lower resolution while keeping your HUD (UI) sharp. : This security feature can cost up to