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The Division 2: Title Update 3.1 to fix a lot of AI related issues, scheduled for June 3rd

A new maintenance has been announced for The Division 2. The next Title Update 3.1 is scheduled to release tomorrow, and as such, the servers will face downtime. We’re here to discover a couple of info that is about to be worked on, but also reveal the preliminary patch notes, first discovered in the State of the Game.

The Division 2 has definitely grown a lot since its original title. Exterminating bugs, no weird glitches (except a couple of ones), the addition of Raids, enhanced missions and more, so far, everything seems just on point.

As always, another episode of State of the Game has discovered a couple of info regarding the title update 3.1. As such, it was discovered that the upcoming update will mainly focus on fixing AU issues, brought with Title Update 3. Luckily, the developers have found a firm establishment to deal with this issue, therefore, this patch will mainly focus on the NPC behavior.

Title update 3.1 doesn’t have any precise discoveries, but it will be indeed focused on fixing strange occurrences. Even if the previous two maintenances have been connected to the very same problem, Title Update 3.1 is scheduled to complete unroot the issues from the game.

As announced on the Ubisoft official forums, the scheduled maintenance is starting on Monday, June 3rd with the following times:

  • 09:30 AM CEST
  • 03:30 AM PDT
  • 00:30 AM PDT

During this server maintenance, Title Update 3.1 will be deployed, which is scheduled to fix a lot of known issues and AI behavior. For more detailed info, check The Division 2 Subreddit and discover what was exactly discovered as broken during the State of the Game.

NPC / AI issues that were introduced with TU3

Enemy AI Mechanics
  • The AI is still based on a behavior tree system where the NPC decides on conditions how they behave and what they do.
  • The Hunter AI of the Survival DLC was basically the foundation of the AI in The Division 2.
  • The Division 2 built on that and also had to incorporate better behaviors and a lot more Archetypes of the different factions.
  • These new hostile Archetypes also have new and unique abilities (like prone) that were not around in the first game and they also have alternative tactics. For example, when you destroy their main abilities, they attack in different ways and so on.
TU3 AI issues
  • There have been 2 major issues with the AI in TU3 that were interconnected and caused a lot of issues and fallouts.

NPC Aggressive Behavior (rushing behavior of NPCs)

  • The NPC basically lost track of the player when they started moving and that manifested itself by an NPC running past the player or running up to the player to start a melee attack.
  • But what the NPC actually wanted to do was to get behind the player. But since he lost track of the player, he basically got surprised when he found the player in his path and switched to his melee attack behavior.
  • This could happen more often in closed spaces than in open spaces, because there was less room to maneuver.
  • On top of that, since the whole AI algorithm is basically interconnected – when things like this happen, it can cause a lot of fallout and that should not be happen.

NPC Speed of Movement

  • Players reported that NPCs were moving too fast
  • The NPCs had a bug that they accelerated too fast and were x times faster as they should be for a brief period of time.
  • This could occur after a turn animation because there was a disagreement between server and client how fast the NPC was moving after the turn animation.
  • The other issue was broken animations because of a fix that NPCs would not clip with the environment when they were climbing stairs.
  • All that combined you had NPCs moving in unexpected ways and also had strange animations.
  • To fix that, they had to improve the communication between client and server, so that they don’t lose track of the NPC speed, introduce failsafe scenarios when problems arise and also fix the animations.
Lessons learned
  • A tactical shooter should stay tactical and there should not be a regression in AI and NPC behavior, only improvements. They are very proud of their work and don’t want to release issues like there were in TU3.
  • There was a lot of detective work to find out why the issues where introduced in TU3 and that they not happen again.
Fix Schedule
  • The vast majority of fixes will drop with TU3.1 and the second set of fixes in the patch after that.
  • So after TU3.1 the AI should be back to where it was before the issues of TU3 were introduced.
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David Goodwin

Continuing where I left before feels refreshing. Addicted to the gaming industry, best I do is working on looter-shooters but also express my opinion on a variety of BR video games. Future Game Releases is my new home and I hope it will stay that way.

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