I've been experiencing terrible lag in certain areas of the game, and I am sure this is not a performance issue. The default setting for me is at ultra, in which I have played 80% of the game's length with no issue, excluding the following.
It's strange that this only occurs in certain areas. The first time was in mayor Cecil's office exclusively. Now though, the problem popped up twice more in the source temple and Evelyn's chamber. After leaving Evelyn's chamber is now seems permanent and I need some help to fix this.
What happens is that any action I make will effectively freeze the game or make any actions null, nothing happens, unless I alt tab, in which case the last action called will finish, and the it will reoccur upon the next action taken. Outside of combat any time I click to move all party members run off map or through walls and I cannot finish picking up an item without alt tabbing in and out.