You can find screenshots, comparisons, and the actual download here:
Graphics Control Panel
Add the program to the NVIDIA Control Panel.
After launching the NVIDIA Control Panel, go to “Manage 3D Settings > Program Settings > Add” and select “Batman: Arkham Knight”.
Tweak the settings.
Here are the settings that will improve graphics quality the most (keep in mind that performance is not a concern here, and many of these settings will tank your FPS):
Anisotropic filtering: 16x
Antialiasing – Mode: Enhance the application settings
Antialiasing – Setting: 8x
Antialiasing – Transparency: 8x Supersample
Multi Frame Sampled AA (MFAA): On
Texture filtering – Quality: High quality
Vertical sync: Fast (Make sure to disable the in-game V-Sync).
Enable DSR Support.
What is DSR? DSR renders the game at a much higher resolution than your monitor, and then down scales the result to your monitor’s resolution. The result is that you have very little aliasing and improved and sharper details and improved overall image quality.
WARNING: THIS WILL MASSIVELY REDUCE YOUR FPS
To enable DSR, click on the “Global Settings” tab and change the following:
DSR – Factors: 4.00x (native resolution)
DSR – Smoothness: 0%
Enable DSR In-Game.
After you have enabled DSR support in the NVIDIA control panel, you will have to enable it in-game for it to take effect. Enabling it in-game is very easy, you just change the resolution like normal. If you did it correctly, there should be a resolution 4 times the size of your monitor’s resolution (e.g. if your monitor is 1920×1080, there should be an option for 3840×2160).