Remember when I said I had never seen a game look so good even on the lowest graphical settings, after trying Red Dead Redemption 2? Let's add Batman: Arkham Knight to that list lol. This is the game with everything on low/off except for AA. Low resolution aside, of course (my monitor is 1366x768 and I didn't bother setting everything up just for this screenshot lol), but I think you get the idea:
You really woundn't tell this is the game with the lowest graphical settings available, even textures.
Want to shut off Chromatic Abberation? Well then, you need to select LOW post processing. Oh did you want to keep some of the other effects and just dislike the fuzzy shit look CA adds? Guess you can go digging through the game files then and figure it out yourself.
I switched from 4k dlss to 4K downscaled at 40% with the game internal scaler and for this game I can say that DLSS is not that great, it gives a good look to certain areas but it looks bad in others (too much washed colors and textures as well as aliasing), even if at 40% of 4k the game looks much more refined and the framerate is faster too at least for my configuration (1080p 27 inch monitor and a 2080)