It's been a week now and a lot of us are having issues. The expansion is essentially the same as the patch we got a month ago, so a lot of us have been having these issues for a month now. I don't want to sound ungrateful, but the new deus ex game got a driver the day of release, and Legion was at least 10x more anticipated than it. I have a 390, 4440, 8g of ram and get constant fluctuations between 30-50 fps on high settings in 1440p. Before Legion I was getting steady 60-85 fps on Ultra in 1440.