BIOS first: disable ASUS Multi-Core Enhancement, force Intel Default Settings, hard-cap PL1/PL2 to 253W. Eliminates false Out of Video Memory errors on 13th/14th Gen Intel. Windows: shift thread scheduler to Background services. Add UE_5.8 and AppData/Local/UnrealEngine to Defender exclusions. Stops Windows from throttling ShaderCompileWorker mid-compile. NVIDIA: DDU clean wipe, then Studio Driver. Power Management to maximum performance. Shader Cache to 10GB. Background FPS cap of 20-30 on Unre...