This patch seems to have changed the way the game handles downsampling under certain circumstances (for the worse). Previously (if you alt-tabbed out and back in, for some reason it needed that to kick in) the scaling was akin to bilinear resampling and actually provided a non-shit image when downsampling from a non-multiple of the native screen res, but this is absent in the latest patch. Both of these are 1440 > 1080, simulated as accurately as I could:
Ver. 1.01
Ver. 1.02 (beta 1.006)
Ver. 1.01
Ver. 1.02 (beta 1.006)
I can 100% confirm this. Before, you could trick the game into thinking a DSR resolution was a normal downsampling res, and it applied bilinear filtering after a single alt+tab, as long as DSR smoothness was set to 0%. Now, with the bug fixed, resolutions such as 1440 DSR on a 1080p monitor appear as they do in your second screens. I'm afraid the only option now is to increase smoothness to 25% or up for non 4k DSR resolutions on a 1080p display.
It's one of the reasons I recently reverted back to my native 1080p in-game. Nvidia's custom res fix can't come soon enough. Man I wish there was a DX11 GeDoSaTo available.
Weird, I was having this problem prior to that patch, sometimes It happened and sometimes it didn't and it was driving me insane, I didn't know exactly what triggers it so I ended up disabling DSR (also because I don't like the blur the smoothness settings brings) and created a custom resolution in nvidia's control panel, that resolved it.
Yesterday I updated the game with the latest patch and even though I couldn't play I ran the game up to the main menu screen and I did not notice this problem, the game looked as good as it did once I fixed it through the custom res downsampling.