Where is the best place to complete the bestiary of the creature Son of Verminor?

Question

I know Son of Verminor can be found in three places: The Vats (Inquisition), The Hive (Inquisition) and Verminor's PoI throne. Which place is the best to complete this creature in the following situations:

1) Solo during regular respawn (as a 750 Druid)?

2) In a large group during rapid respawn?

Answer 1

The best place is the vats (inquisition), he takes more ice damage and i don't know if solo is the best option, in team it's much easier and faster.