AI Booster

A couple of boosts to the AI. Used for Emperor and Above.

Grand Strategy Changes

AI has higher desire to build and keep larger standing army (Ground, Navy, Air and Nuclear Weapons)

More base gold for AI and less maintenance in later era so help the AI with he upkeep of a larger army.

Higher priority for the AI to deploy Gold to buy units

Very slight bonuses for AI every ERA in science / culture / food / gold / amenities

Slight Bonus to AI war weariness (AI gets 20% less in modern on Emperor difficulty)
Immortal or higher give AI 15% less from medieval, 30% less industrial and 50% less in modern or later.

Changed AI early focus to be more food/growth focused.

Increase AI build priorities for important things like (Settler, Districts, Trader, Worker, Spies)

Militaristic and Expansive AIs get more War Agendas (Large Standing Army etc)

(NEW) Removed specialist slots for faith buildings, AI was stacking them full and wasting citizens.

Tactical Changes

AI is more aggressive when at war to attack cities.

AI combat bonus have been increased with 1.

Details

The AI gets a 8 gold boost for city center in classical and then additional 8 gold boost in medieval (To pay for the increase in AI units below).

Slight ERA bonus for science for AI in late game per city. +1% per handicap starting in Renaissance, giving 1% plus for King, +2% in Emperor and so on. Each next era gives an additional 2% per difficulty level. Resulting in Industrial for king is +3%. Final bonus in Info era will be +1%+2%+2%+2%+2% = 9% on king.
For Immortal its +3%+6%+6%+6%+6% = 27% in the info era.

Slight ERA bonus for culture for AI for king its +1%+1%+1%+1%+1% = 5% for king, immortal its 3%+3%+3%+3%+3% = 15% in info era.

A small boost to food starting in Medieval and ending in Industrial +1%+2%+1% on king, and +3%+6%+3% on immortal.

Gold boost in Classical to Renaissance 2%+2%+2% total of 6% for king, and +6%+6%+6% total of 18% for Immortal.

Unit maintenance is adjusted for AI to help with maintenance of all its new standing units, this only kicks in on Emperor and Immortal difficulty. On Emperor the AI get 1 gold maintenance discount in Modern age. On Immortal the AI gets one additional discount in maintenance in medieval and then one more in industrial for a total in industrial of a discount of 3 golds per unit. Cannon for example will now cost AI 2 gold instead of 5 on immortal or deity.

Amenity Handicap for the AI, the AI now gets a free amenity on emperor in the modern era. Then for immortal an additional free amenity in medieval and industrial age for a total of 3 free amenities.

AI combat bonus have been increased with 1. So Immortal the AI has a bonus of plus 5.

Boosted default chance of producing settler, worker, trader, districts, airplanes, navy, nuclear weapons.

Re-align era focus to focus more on growth early and slight increase for science (Remove Firaxis only science focus bug)

Finally the AI standing army unit numbers desires have been boosted, both for ground force / navy and air including nukes.

Increased AI max operations and higher priority to attack cities.

With both of these changes together look for significant larger AI armies and navies and air force, be warned invest in a standing army/navy/air-force or be overrun if they declare war, its very common for the AI to create a lot of damage if they declare war on you.

I would recommend (Real Tech Tree, and remove science and culture city states to slow down the game progression.
I also uses a mod that slows down later eras as well. I also using a mod that increase road speed a tiny bit, a less gold mod and extra AI builder charges. I find that now I don’t face palm as often when I look at the AIs territory.