If you are thinking of the problem with freezing in the south west part of Siptah then it is a known problem and, it is confirmed in the PC Update section.
I just discovered it today after having told a fellow player that it might be his pc that caused it… Embarrasing to say the least after finding out that I myself cannot go to the Vulcanic area southwest without my screen freezing, sound continue to play but game becomes unresponsive… Next time I might listen when someone keep saying it is not their pc but the game that has a problem 