To render 4K it is not necessary to have discreet GPU (Nvdia/AMD). Intel Graphic chipsets are OK. From 3rd Generation of Intel i3,i5,i7 Support 4K. From Vlc 2.2.X onward 4K display is better (personal experience.) I hope you are using Windows? kindly specify details HW &SW Why DXVA? DirectX Vide...