As far as I know the game seems to work fine for most people. How sure are you it's not a system issue? Given your topic, methinks you don't have the expertise to be very sure. So you assume, and hope, it's just someone else's problem.

So... what are your system specs? Are you sure you meet the requirements? Hard to say since you didn't mention them, or really any information.

Both this and Uncharted 4, that you've also complained about, worked without lag or crashes for me.