Screen freeze in Vanguard

In Vanguard level 3, I’m getting screen freezes after the boss spawns, making it impossible to properly finish the event. It doesn’t happen on level 2 because there is no boss, although there is some degree of screen stutter towards the end of purifying the 2nd tower.

In addition to a description of the bug you are reporting, please provide:

Device Type: PC
Device Operating System: Windows 11
Diablo Immortal App Version: 4.0.3.0.e538…

Which class are you? I had these issues when Druid but back as Barb no issues.

Necro with summons. (…)