at me now realizing to disable AA at high resolutions.
soon as I disable it, I get a performance boost.
yeah, 'real' AA is a big performance hit. it's usually the first thing I turn down/off if I don't like the performance. post-processing AA, like FXAA, isn't too bad though
in general you should stick to your native resolution, and adjust other settings. that's something I had to learn, cause shyt was different with CRT monitors