What does FXAA do in Skyrim?
Advantage.
Does turning on FXAA increase FPS?
Anti-aliasing. Reducing the sample rate (e.g. from 4x to 2x) may improve performance. Less GPU-intensive forms of AA (like FXAA instead of MSAA) can also raise FPS.
How can I make Skyrim run better?
Lower the graphics settings in Skyrim: Go to Settings > Graphics and reduce settings like Shadow Quality, Texture Quality, and Anti-Aliasing. Disable V-Sync and see if that improves performance. Since you mentioned having a few mods, one or more of them may be causing issues:
What does anti-aliasing do in Skyrim?
You know stuff like the telephone. Line here do look a lot more crisper. And also the grass as well um looks a lot better now with the telephone lines. As you can see on eight. Times.
FXAA will remove jagged edges if you can’t use MSAA, but will also blur the game. MSAA needs a fairly powerful graphics card, FXAA doesn’t.
If your system can’t quite handle ENB’s edge AA, you can use Skyrim’s FXAA instead. Either use Edge AA or FXAA, not both.