Platform, device version and operating system:
Android 8.1.0 on OnePlus 5T
Screenshot or image:
What you were expecting to happen, and what actually happened:
The new Invasion weapon, Fist of Heaven, lags when it is cast. After it explodes and does five damage to the first enemy, the game lags before new orbs fall onto the board.
How often does this happen? When did it begin happening?
This happens every time starting Fri Dec 18, when I first got the weapon.
Steps to make it happen again
Equip Fist of Heavens. Enter battle. Cast weapon. Wait for explode to finish. Wait for the five damage to finish. Now enjoy the lag.
I have tried this in both the Invasion and explore, and it happens in both places.