Pre BL I ran the game at 120fps on average. Post BL update my frames have essentially halved, running at around 60. I don't know what bungie have changed to make it it run so much worse, but I can tell you that whatever improvements have been made were not worth this cost to performance, from my perspective. I used to think that bungie could easily put a 120fps performance mode in the next gen console version, now I'm worried the 60fps upgrade will not even maintain a solid 60. I have made no other changes to my pc, the only thing that has changed regarding D2 is the beyond light update.