I've noticed that when you use a synergy it's activated instantly (easier to use than before) but the animation will happen 1-2 seconds later or if at all. This doesn't seem to be lag because it happens consistently every single time. But I've also felt that skills in general seem a little wonky, as in sometimes when used the animation either doesn't appear or it appears 1-2 seconds later. I've even asked in group chat during some dungeon runs and others have agreed that skills are sometimes acting different than before.