very-very bad optimization

This **bleep** game has very poor optimization, because all the changes are aimed at new content, but the concept of optimization has been completely forgotten. Why should the player suffer because of the crooked handedness of the developers?! Constant FPS drawdowns and delayed action in combat. Why can't you make an independent client from the server?! It's just that the calculation is performed on the client and the main actions are performed, and the result is sent to the server after the action is completed.