@Verkava All good, and thanks again for letting me know. I was unaware of such an issue, and I wish there was more I could do on my end.

Thanks but no need, harder enemies have Loyalty buff anyway.

But I always noticed how friend and enemy AI city building suck badly.
Example I would have 13-14 building in 10 population city.
While at same time AI is building it's tenth building after acquiring 10 population.

@Verkava What I can recommend is to play on an easier difficulty, as this will adjust the AI's starting loyalty, which in turn will impact resource generation.

Very Easy AI: -15 Starting Loyalty
Easy AI: -5 Starting Loyalty

@Verkava Unfortunately, it's currently not possible to have the AI grow "Maybe -30...-50% slower than player." There's still no way (at least not that I'm aware of) to even check for AI player control with the modding tools we currently have. If you know a way, please let me know!

If you're worried about the AI's economy, may I recommend: Increased Tile Resources (x5) , or Increased City Resources (+100%) . Both of those mods will affect all player resource income, might help?

@Verkava That's good to know. Anything I can do to improve this mod?

This mod will make AI city building a way better.
AI is coded to keep it's cities always at 100% efficiency.
Meaning: AI only makes 1 building per 1 population.
Making it way slower than player who ignores efficiency. Maybe -30...-50% slower than player.

This mod should make AI harder enemy economy wise.