A lot of people seem to have problems with how the game selects the pops that grow in your empire.
I'm not a fan myself but if you disable migration for all species and only colonize planets with the pops you want there things can work out ok. It works with two 2 species(a specialist species and slaves) on a planet too if you use resettlement.
For most of this game only the Tebir had migration rights and I used them to colonize most planets(I rushed a DA neighbor and I really liked those cyborg/strong/industrious pops).
Now the only species with migration rights are the Rackets and they are currently growing on most of my planets as I want some psionic cyborg governors.
My main species are the Iwor which only live on the homeworld and a research world at this point.
Ignore the machines I just integrated a machine empire.
However there is one problem. Migration treaties bypass migration controls.
This makes sense in a way because one-sided migration treaties used to be possible at one point and with the current version you would just get a pop-growth bonus from such a treaty with no downsides because AI planets tend to have lots of unemployment and lack of housing.
I'm not a fan myself but if you disable migration for all species and only colonize planets with the pops you want there things can work out ok. It works with two 2 species(a specialist species and slaves) on a planet too if you use resettlement.
For most of this game only the Tebir had migration rights and I used them to colonize most planets(I rushed a DA neighbor and I really liked those cyborg/strong/industrious pops).
Now the only species with migration rights are the Rackets and they are currently growing on most of my planets as I want some psionic cyborg governors.
My main species are the Iwor which only live on the homeworld and a research world at this point.
Ignore the machines I just integrated a machine empire.
However there is one problem. Migration treaties bypass migration controls.
This makes sense in a way because one-sided migration treaties used to be possible at one point and with the current version you would just get a pop-growth bonus from such a treaty with no downsides because AI planets tend to have lots of unemployment and lack of housing.