(performance is improving in each update though)
Uhm, not its not, and if you say this, you clearly havent been playing this game for a while, let alone testing its performace.
Its performance has been improved somewhat, but there are a lot of things that have received graphics "boosts" so with the increased quality, comes an increased cost in performance.
Turning on Realistic Shadows, has always been a performance killer, and lately its gotten worse, not better.
To be fair, graphics are also better, but the issue is performance here, and thats what I'm talking about as well.