After searching internet for clues and testing for many goddammit week, the effort has finally paid off!
Here's what I did to the final result, maximum pre-rendered frames 1, triple buffering enabled and FXAA off through the NVCP, v-sync ingame on and PostFxQuality="false".
I can't f***ing believe I have made it!!! Now I can play FAR CRY 3 with smooth FPS 50-60!!! I hope this can help you guys who have the same issue with me.
Edited by Crazy6a3er - 2/7/13 at 7:28am