This prioritizes your game’s process and prevents Windows Update from installing drivers or sending notifications in the background.

Located in Windows Security > Device Security > Core Isolation. Disabling this can provide an instant 5-10% FPS boost , though it reduces a layer of virtualization-based security.

Set this to 10GB (or 100GB if you have ample SSD space). This prevents the GPU from constantly recompiling shaders, which is the leading cause of stutter in modern UE5 titles.