I have done Skoldus Hall, layers 1-3 and Coldheart Interstia Layer 1 and I have experienced the same problem every single time on the third floor. Essentially what happens is when I reach the 3rd floor for that particular layer, I free all the trapped souls, run past the vendor and select my anima power. After that the game freezes where I am unable to use abilities, interact with the vendor, buffs that countdown stay at zero, etc. The systems of several lag. The only way to resolve this is by force closing WoW and restarting it. Upon logging in I have to select the anima power again. This networks problem does not exist at any other point in torghast, only on the third floor.