Hmm I guess try some of the different AA and texture modes and see what happens
Novigrad in TW3 might be a good test scene as plenty of objects with jaggies yet also high res textures to try and keep sharp. Skyrim and trees/vegetation is another one. You may encounter some issues with various AA modes not making any difference where a game uses non-forward rendering - sometimes drivers are clever and manage to inject some form of AA in there, so it's a good test of the driver teams ingenuity, but where that fails the only remaining options are post process AA methods like FXAA which blur textures, and super sampling/downscaling.