Maximum migration: Am I losing POPs?

[Secret Master]

So, I’m running inward perfection and I just found a ringworld. Fixed it up, no problem.

I also own around 30 planets, most of which are getting full in terms of employment and housing. So, I have tons of internal migration. I also have no migration treaties (so POPs stent leaving the empire) and I’m building robots (enslaved synths) on every planet.

Needless to say, I seem to be capping out on migration to the first segment of the ringworld I colonized. But looking at my planets, it seems like I’m losing more POP growth to emigration than I am recouping via immigration to my ringworld.

Am I actually losing POP growth (similar to sedentary trait), or is the math more hidden
than that? If I’m losing POP growth, I will need to build a series of habitats to soak up extra POPs during the down time while I continue restoring the ringworld.

 

[ArmChairAttila]

I would also like a run down on migration. Is it possible to get the overpopulated planets to automatically migrate to others? I have purposely reduced housing and jobs on planets to get the pops to start auto-migrating but it does not seem to work or I am completely missing something. Don't mean to hijack your thread SM but was hoping for a good all around explanation on migration and immigration.

 

[Blurb]

To my knowledge, excess migrants simply disappear.
If you're not capping out on all receiving planets, then you're most likely not losing net growth.

I would also like a run down on migration. Is it possible to get the overpopulated planets to automatically migrate to others? I have purposely reduced housing and jobs on planets to get the pops to start auto-migrating but it does not seem to work or I am completely missing something. Don't mean to hijack your thread SM but was hoping for a good all around explanation on migration and immigration.

You should try the search function.
https://forum.paradoxplaza.com/forum/index.php?threads/on-migration.1139824/

If your planets lack both jobs and housing, but don't have emigration, then the pops likely have migration controls enabled.
It's also possible (but unlikely) that they have less than zero emigration push, in which case they'll simply not produce any emigration.

 

[Wolfgang I]

Migration controls do not seem to prevent emigration/immigration for pop growth purposes(at least in a multi-species empire in which other species have no migration controls).
I'm playing a game now in which I enabled migration controls for my founding species on day one.
It works for the RP purpose I wanted and no founding species pops started growing on my xeno colonies.
However an emigration/immigration malus or bonus to pop growth was still applied to founding species pops on my xeno-free homeworld.
Edit: My 2nd planet was a pre-FTL world I conquered and at first I colonized all other planets with xeno pops I got from that planet(and later with an uplifted species and a species I got from a migration treaty). A positive or negative migration modifier to pop growth was always active on my homeworld. The xenos had no migration controls unlike my founding species.