---QUOTATION--- You could always use something like SweetFX to use SMAA as well. Almost as good as MSAA and with no performance hit. ---END QUOTATION---
could give it a try, but the performance I get with msaa is perfectly playable. got it working yesterday with nvidia inspector and nvidia control panel. downsampling (2880*1620) + 4 x msaa still framerates around 60.
downsampling + 2 x msaa = waaaaaaay over 70-90 fps, so no real need to search for something which drains less performance *
overclocked gtx titan makes it possible *
will try SSAA too.
and I have to say Downsampling and msaa on stalker looks outstanding... did it with complete mod + photorealistic zone 2.