This problem was already present in the last two betas and hasn’t been fixed since. The game crashes as soon as I enter a story instance in Heart of Thorns, with my harddrive ticking in the loading screen. I have enough free space and the problem does not occur with anything other than the HoT story missions. I already bought the expansion and it would be really bad if I bought it for nothing because of this game breaking bug.
Did anyone have the same problem and find a solution?