更快移民/Faster migration
English translation is generated by AI and may contain inaccuracies. Please refer to the original Chinese text for accuracy. >︿<
This mod increases the population limit for migration to address labor-space mismatches and ethnic conflicts.
Specific changes:
1.Greatly increased the impact of infrastructure level on weekly migration inflow/outflow caps (+100 people per level per week).
2.Raised the maximum weekly out-migration ratio from a state to 0.5%.
3.Increased the influence of unemployed population on migration.
4.Slightly strengthened migration waves.
5.Increased the probability of cultural community emergence.
6.Removed the original minimum 5% migration fraction requirement (this could cause performance issues, so it was later adjusted to 1%).
7.Strengthened the effect of unused arable land and available jobs on migration attraction, encouraging unemployed populations to move to these areas.
8.Increased assimilation speed to balance potential performance impacts from higher migration volumes.
Features and notes:
Even without enabling the "Green Grass Movement," migration volume is naturally high—population continuously expands into new territory. If there is local unemployment, people will readily migrate out on their own. Empty factories also have high attraction—even with zero population, you can directly build factories there.
When used together with the "动态文化本土" mod (ID=3085195360), enabling the Green Grass Movement (which increases community emergence chance), heavily upgrading infrastructure, developing workshops, or having large amounts of unused arable land—all while maintaining sufficient dominant-culture population—allows you to quickly turn ethnically mixed or minority-dominated states into ones dominated by your primary culture. With active management, you can integrate culturally distinct territories in the short term and suppress radical movements to prevent separatist uprisings.
The mod is simple and can be easily modified according to your needs.
It’s a light modification and should not significantly affect immersion.
It can be enabled or disabled at any time.
Performance impact:
Personally, I haven’t noticed significant performance issues. I didn’t have time to conduct thorough testing, but my laptop specs are i9-13900HX + RTX 4080 + 64GB RAM. Noticeable stuttering occurs both with and without the mod only when I’m playing as Qing China and reach ~3B GDP. Nevertheless, I’ve included some optimizations just in case.
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Additional notes:
There’s a common issue (likely a bug) in vanilla: for migrants to enter a state, its migration attraction must reach at least 75% of the highest attraction among all states. Paradox probably implemented this to avoid excessive computation from too many eligible migration destinations, which could cause lag. However, this often leads to a problem: if one state has significantly higher attraction than others (e.g., due to colonial settlement or discovery of gold, rubber, oil, etc.) but has insufficient infrastructure, migration into all other states stops completely. Meanwhile, that single state’s migration inflow cap remains low, so once it reaches its limit, no further migration occurs anywhere else—resulting in regions with very low attraction but no out-migration. These two restrictions are easily triggered under normal gameplay.
The usual workaround is to avoid letting any single state’s attraction become too dominant. In this mod, I lowered the 75% threshold to 60%. However, the issue can still occur. I’m hesitant to lower it further due to potential performance concerns. It’s recommended to use this mod alongside the “文化合并” mod (ID=3574421827). If you’re confident in your system’s performance, you can manually adjust the MARKET_MIGRATION_STATE_ATTRACTION_FRACTION value in the mod files.
Revisions:
Old revisions of this mod are available below. Click the link to download.
