Hi,
I checked your screenshots and there is little difference between them? As for anti aliasing, this only effects games and not the desktop area. That's why in the description is say's for your 3D applications, meaning games. I usually have settings like that set to enhance application settings or something like that. Until you really learn what everything does your better off running the driver in default mode. One setting which can have an effect is FXAA which can make text seem a little blurry so it should be turned off when not gaming.
An extremely handy guide to Nvidia drivers and their relative settings can be found here:
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I'd also make sure your running in the correct resolution, all other drivers are the...