That's ridiculous, it usually runs smoothly, but then it begins at once to properly hook because so 2-5 seconds stills come about and the like.
The stuttering occur suddenly, for no apparent reason - my graphics card GeForce GTX 750i 2048MB.
In other games it never jerky! Such as BF3, Crysis 3, FarCry 3, etc ...
The game seems to be bugged. The game stutters even in some high-end computers. Many are still waiting for a patch.
If there should be problems, then helps the support not much further.