Even 60 FPS is perfect for smooth playing, why are you worried about 100? And you did not list your system specs, so no way to know anything with what you wrote.
I came here for problem solving. My system is powerful enough to exceed this FPS (im not just referring to crysis 3). I have a 144hz monitor and If i can get up to that FPS I dont see why I'm being limited.
My question is what could be putting a CAP on my FPS in games? Is it built within the game, or is it something on my software/driver side?