We've made a design change to Carnevil with the goal of reducing lag caused by the build without changing the overall power level. To clarify, the lag is primarily caused by the high number of Poison Darts being fired (20+ piercing projectiles) at a high attack speed (2+ times per second) with the build. The change is as follows:
Carnevil
Instead of "Every one of your up to 23 Fetishes shoot a Poison Dart every time you do", Carnevil is now "The 5 Fetishes closest to you will shoot a powerful Poison Dart when you do."
"Powerful" in this case means those 5 Poison Darts deal 3.8x the damage that a single Fetish Poison Dart used to do. In other words, those 5 Fetishes will deal 19 previous Poison Darts' worth of damage, with the expectation that the remaining 4 piercing Poison Darts' worth of damage will be made up for by the other ~18 Fetishes who are now using basic attacks.
Our internal testing showed performance improvements while maintaining the general feel and playstyle, and we hope you all will feel the same when you see the changes next PTR patch.