Something feels off, even playing on Prince.
Just a year ago I was able to beat Immortal, also using this patch, though an earlier version, on a One City Challenge, playing as Babylon, and getting a decent techlead early on.
This time around, still playing as Babylon, I struggle to keep up in tech, but manage to win an early war after being declared upon, taking all of their (France) cities but one. 150 turns later, out of the blue, 4 of the 7 AIs decide to dogpile upon me, despite now only being behind two of them in tech, all of them friendly towards me, and me sitting at a comfortable 18 / 24 military count, so there's room to panic buy units with my ~2000 gold bank.
On top of all that, two turns after the DoW, the one I had let keep one city, and whom still had only the one city at the time, decides to do a DoW as well, somehow, on just one city, bringing in 14 units all on a similar tech as my own. And as the cherry on the top, the happiness just tanks from 18 to negative 4 during the first five rounds of war, all of it due to war weariness.
Game was going great up until then. Then completely lost in less than 20 turns after a dogpile DoW out of the blue.
I get that the game is supposed to be more difficult, but I have never seen such dogpiling before. At least not until after ideologies started taking effect.
Something feels way overtuned.