Eternal Essence – Faster AI turn + smarter AI.

Perhaps this information will be helpful: I solved the problem of long AI turns using a speedhack, specifically with Cheat Engine. I simply activated it during the game and used hotkeys to speed up the game during the AI's turn. In practice, I found that a speed of x5 was optimal; if it's faster, the effect becomes less noticeable, and the image starts to flicker and become irritating to the eyes (the system is average for modern games).