The Ring of Royal Grandeur only drops from Act I bounty caches. From various places online, I've heard:
- Torment I, because they're all the same
- Torment VI, because you're guaranteed a legendary drop from the cache
- Torment VIII, because you get "added bonus" (???)
- Normal(!?!), because almost no other legendaries drop at that level (but the post is downvoted so it seems that might not be true)
Which is it?