We seriously need an option to replay the castle invasions and missions all in all. Please being that to the table, it would mean the world to a lot of people.
I had HUGE fps drops in the game, all up until I visited Asgard. When I entered that area my fps went smooth as butter. Once back in England my problems with stutter and lag were gone, no matter the Graphic settings.
So if you're that far or on your way, I advise that you save in that area every time you're about to quit. Because when you enter the game again the FPS will cause zero trouble when you go back to England from there.
This was just my take on it, no guarantee it'll work for any of you.
Many (Including myself) have reported huge FPS drops regardless of how great a rig they have. We need a performance patch so we can get to play the game we've waited for, regardless of others having succes on PC.
