How Many Nations?

[Wizzington]

Realistically less than 100.

 

[Wizzington]

Because of performance?

Because that's the way the game is set up.

 

[Wizzington]

So it has like a hidden internal cap or is it just unrealistic, that more nations would become independent during a long playthrough with a 1000 star system?

No, you could mod it to spawn 1000 countries if you want to. I don't know how good the performance would be but performance is not the main reason we don't spawn 1000 countries in the base game.

 

[Wizzington]

So can i or can i not try and liberate every planet into smaller Empires ?

You can. If you're patient/insane enough you could create hundreds of them, but I doubt very many people will do that.