Currently I'm still using 163.69 and despite their ascertion you need to update for Cryisis I'm not having any unusual trouble over the general low FPS which most seem to be complaining about, around 10 if you max everything out, turn stuff down to med or high instead of very high and it runs at a healthy 45+ FPS and the reduction in quality is not an issue the CryEngine is still the best rendering engine out, it looks fantastic even on med textures etc;