I have come across a user who seems to have accumulated "Steward" badges at an impossible rate; I believe there must be a bug in the platform.
They received the badge 18 times in the 8 hours and 14 minutes between Jan 29 18:31 and Jan 30 2:45 for reviewing close votes (and twice more for other review tasks). This would correspond to reviewing close votes for 18,000 questions (almost 10% of all the questions in the entire community) in a little over 8 hours, which doesn't seem physically possible. Is this system behavior correct?