I'm gonna ask here since I am out of ideas. Since I have a 1080 TI now I try to utilize 4K res more. So I set the resolutions in the nVidia CP for DSR to the desired resolutions (I need to set 2.25 on a 1440p panel to get 2160p for some weird reasons) and leave the smothness to 33% default.
So, some games seem to work but I am not sure? They look and run the same to me. The Evil Within for example looks really blurry (or really jaggy if I set smothness to 0%). Dying Light stretches the image beyond screen borders in fullscreen and other problems. I tried setting the DPI scaling compatibility for the .exe's but that did not really help. I also tried setting the desktop res to 2160p before launching a game but that ends in the same result... So far this is not working the way I had hoped - am I doing something wrong, or am I just understanding this whole downsampling thing wrong?