My setting was too high because i am clearing chapter 12 already
![face04 :face04: :face04:](/styles/default/xenforo/smilies/ComicSmileys/5nsf9Qm_1.png)
. every stage should last 20 seconds before killing the boss to avoid error so its up to you what setting you prefer. you can also use it on interception(for tier 7 items) but not in tribe tower, and Hard mode campaign.