I still had a crashes in my Poland RFC game in 873 turn (1579 - 1581 AD). When I change the Netherlands birth date from 1580 AD to 2020 AD, the crashes gone... and I can continue my playing now.
After this, I tried also to change Netherlands birth date to 1585 AD. So then the game crash is coming in 1587 AD.
I assume, something is wrong with a Netherlands script. When they want to born, the game are crashing.
That's very helpful, thank you.That seems likely, my crash was in 1575AD on normal speed.