"Something something does this fix the AI moving its divisions or ships this or that way"

No, no, no. The worst issues from the vanilla game are still present. Some specific cases may be better but overall it is the same. See the documentation for more information.

"Does this help performance by fixing AI division spam?"

The AI won't spam thousands of divisions in the late game, so yes. There is however a performance cost to all the additional AI scripting in this mod. The game is a little slower from the beginning but lags out less during the late game.

"I picked Germany, set sliders to max and steamrolled all of Europe/world by 1939."

This is a sandbox game so you can play any way you like. However there are several problems with this: 1) Germany is by far the easiest nation, 2) the sliders only very marginally help the AI (so use more buffs through the EAI config), 3) there's a reason why many MP games use a massive list of house rules. The game is completely unbalanced without them and if human players can't deal with it then the AI sure as hell can't.

"Something ahistorical happened on historical mode."

This mod will not force the game to play out exactly historically whether it's Germany always losing by 45 or China not getting annexed by Japan. If you want to see some nation perform better, give it bonuses.

"Can you make this compatible with my favourite mod X?"

It is unlikely that I will integrate other mods into Expert AI (or the other way around). This mod is created around the vanilla HOI4 with painstaking effort to make an AI that understands how to play vanilla efficiently. An AI mod this extensive will never be compatible with most gameplay or overhaul mods out there without major rework.


⦁AI country has "strategic reasons" against you in diplomacy. Usually intentional on historical mode. For example Italy refuses to join Germany against the Allies until Germany has broken through the French lines (similar to what happened historically). Conditions are usually flexible though so the game doesn't get stuck.

⦁AI USSR does not understand that it should defend instead of constantly attacking Germany. AI in general does not understand how or when to defend.

⦁Commonwealth minors refuse to invade Germany/Italy ever since 1.6. Could be some hardcoded limit because they don't have a lot of ships or they are too weak against those nations.

⦁Germany sometimes does not intercept Allied bombers even though it has enough fighters. Possibly the AI prioritises taking out the USSR airforce so much that it ignores bombers. Sometimes the AI is just a bit slow to shuffle its airwings.

⦁AI cancels ship productions when changing to another design, wasting production.

⦁AI does not produce ship designs with upgraded modules in some cases despite creating designs for them.

⦁AI has unused dockyards. Usually because the AI sets all lines to 1 ship. After every ship, it has to create a new line which can take some time.

⦁AI protects against naval bombers poorly. Probably related to how the AI only reactively sends fighters into naval zones, instead of providing a constant coverage.

⦁AI doesn't protect its submarines, sending them to naval zones with penalties and not caring about threats in the zone.

⦁AI protects its convoys poorly. It can't use its air force to effectively sink subs.

⦁China loses vs Japan. AI China plays worse versus AI Japan on purpose because otherwise AI Japan becomes too weak.

⦁Severe resource prioritization issues with production lines during shortages. E.g when it needs steel for convoys, it instead keeps producing infantry equipment even if it has huge stockpiles of it.