I’ve tried pretty much everything now; ingame, nVidia control panel, injected FXAA… My screenshots still look like jaggy crap. And while that can be fine when you crop+resize it, full-size it looks horrible. An unedited screen of Resistance spawn on Labs: http://img19.imageshack.us/img19/3466/shot01666.png
Drivers are the most recent, clean install and all. Game cache is verified.

