I'm a marathon speed player. The AI is really bad on that speed and it hasnt changed.
Anything under diety is an auto-win. (not saying diety is hard or something lol). And its not because im good or something its just ridiculous
- The AI barely uses religion
- has no clue of how to play during war
- Is horrible at using city states and it's even worse now
- Don't make enough cities
- Has poor diplomacy skills
- Suck at using its gold
- His empire management in general is very poor
The only real improvement I noticed is that the AI is now decent with his workers. The rest is so tiny that it really doesnt make a difference.
I really hope you're not done with the AI. The only reason he's kinda decent in diety is because the AI doesnt play CiV anymore, he plays starcraft 2 (pump tons of unit and building like its nothing).
It's pathetic.
+1.
The AI will never get better, unfortunately, so lose hope. They really don't know how to do it. They can't even start with the BASICS, like not letting AI be a complete idiot and accept to pay a valuable 50 gold for useless open borders. They could start by adding a rule of "settler escort" so that AI doesn't let his settlers unprotected to be easily captured by players or barbs. I'm not a programmer, but these things are obviously extremely easy to do, and while they're basic, they would improve the AI a lot. They could set correct Tech-Orders so that AI upgrades his techs in a logical fashion. I bet you they're currently more random then not.
They could easily make him reject offer of unnecessary luxury resource in exchange for 240 gold. These transactions only help the human. AI doesn't need happiness because he cheats like crazy. I could really make a tl;dr list of easy improvements but there's not much point to it.
Conclusion : Either somebody doesn't want the game to have a decent AI, for reasons left open to speculation, or they're completly incompetent.
Ignore those who try to taunt you because you kill the crap out of the AI. You are right. AI is horrible and maybe that's still an understatement.