In bg3 there is a fireworks shop in the lower city with a merchant behind the counter named Avery Sonshal, who is secretly working for the Absolute. If you go upstairs in the shop you find a bunch of cultists making bombs, and of course, you have to stop them. This leads to a fight that aggros every single person in the building, including Avery, and this is where you may start to notice Avery's unique...quirks.
First, there's his stats. He has rather subpar stats, except for his Constitution, which is a whopping 30, a score which is impossible to achieve for players and reserved for legendary foes such as dragons. This isn't explained, he just Has That.
The next thing you'll notice about Avery is that whenever it's his turn to move, he takes an incredibly long time just Standing There as he thinks real hard about what he's gonna do. So hard in fact, that he has about a 50% chance of suddenly crashing the game after a solid minute of Standing There
If he manages to reach a decision before reality unravels around him, Avery will make very creative choices, such as
Running outside into the street full of civilians and forgetting how to make it back inside,
Jumping over random objects and people only to run back around to where he started, or even
Throwing a fire bomb, in the fireworks shop, blowing himself up. He may do this regardless of whether anyone else in the room with him at the time.
The best workaround for this game-crashing bug is to kill Avery as quickly as possible. But that can be pretty difficult to accomplish, because when the fight starts, you are on the third floor, and Avery is on the ground floor, with 63 hit points. If you saved just before the fight started, you can reload the save and send one party member to the ground floor, and then, when things pop off, I recommend you immediately cast Disintegrate, which will reduce him to a harmless pile of ash. You don't have to use that particular spell, there are many ways to kill him in one turn, but whatever you do, Don't Let Avery Think.
