I know during EA that auras were a problem and could cause lag/stutter/memory leaks. I assumed it would be fixed on full release.
I made a new party for full release, and I was able to play the game for several hours with zero issue, no stutter or lag at all. But as I've levelled up and my Paladin (and Cleric) gained more constantly on auras, the game has started to have issues for me. The day after release when my characters were still relatively low level I was able to play for eight hours no problem. But now my characters are max level and I have four auras constantly on, the game starts stuttering in just a few minutes and it's making it difficult to enjoy.