After some time within the game, the UI interface lags dramatically. I cannot see my cards being picked up and thrown into the battlefield. My turn timeouts are running out since my cards are frozen in the flight. I cannot see what my opponent does, because everything freezes for several seconds. Mouse seems to be clicking where it is supposed to, and the actions seem to being taken, but the view is freezing. Lost some games because of that, and refuse to play more.