Since the game was released, it was clear that performance issues were the game's biggest flaws, and we are constantly working on fixing those issues.
In the meantime, here are some steps you can follow to run the game more smoothly:
-Make sure your computer has the minimum settings required in order to play the game, specially the GPU compatible graphics card
-Update your Java and DirectX to the latest versions
-If you're playing on a notebook, make sure your power cable is plugged in
-Some players managed to get rid of the stuttering by opening and closing the inventory, or by leaving the room and entering it again
The game will keep receiving updates until all the problems are solved, and content updates are scheduled for June.
As always, thank you all for your support.