: In Windows Security > Device Security > Core isolation , toggle Memory Integrity to Off . This can provide an instant 5-10% FPS boost.
: Add your Fortnite installation folder to Windows Defender's exclusion list to prevent real-time scanning from causing micro-stutters. How to Fix FPS Drops & Boost FPS in Fortnite - ...
: Cap this at or slightly below your monitor's refresh rate (e.g., 237 for a 240Hz monitor) to prevent erratic frametime spikes. Low Graphics Presets : : In Windows Security > Device Security >