DSR integration for Unity 3D

Hello. I am making a game in Unity 5.4.0f3 and the problem is that if I set the resolution higher than the native resolution(i.e. DSR resolution) the resolution is not applied and the game run at native resolution. I contacted Unity Technologies and they said that Unity doesn’t support DSR natively and advised me to ask in Nvidia Developers Forum so here I am. I googled it and searcher but no result. Please help!