i do notice the difference, just look the smoothness of the movements in 60fps(select 720p 60fps)
https://www.youtube.com/watch?v=4jyXAgMk4sY
and compare it with the 30fps
https://www.youtube.com/watch?v=g3UTgCqOZOU
here are some more examples
https://www.youtube.com/watch?v=zsHmZ1Sl8Ho
either way i dont mind the game being 30fps as long is stable and that the game doenst really need to be 60fps









