I am having the same issue for the past few days. I click the Icon and a minimized window that cannot be maximized appears and no sign that the game is actually loading.
I tried to play this, but was also at a standstill when dealing with the zombie hoard during the fight with Strahd. Kept getting killed, even to the point of being ambushed immediately upon respawn because I tried to run away and died near the campfire. Also, I was unable to use any option when talking to people other than…
I also had a lot of trouble with the Hound, mainly because of the infinite add spawns. I followed the advice I found on a forum to lure it into the previous room, and that worked. The adds only spawn in the Hound's room, so they won't aggro.