The performance in the game is laughably bad

In my current Norse Adventurer to Khan of Khans run, the performance got absolutely dogshit after a 110 years.

There are no Crusades or Great Holy Wars going on. The total character number is 28k. There are no content mods, nothing that adds to the game, only modifications. Limited the game to 25 Adventurers.

The performance drop is unacceptable, especially since my specs are:

6800XT (Unimportant, honestly) 32GB 6000mhz RAM 9800X3D CPU

Good fucking luck to Paradox optimizing this performance when they add the rest of Asia.