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Significant population drop when loading into save after fresh game launch

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splashgod

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Nov 3, 2023
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Information​

When reporting a crash, stability or performance problems, please use the Report a Crash button on the earlier screen​

[CLICK] I understand

Required​

Summary​

Significant population drop when loading into save after fresh game launch

Steps to reproduce​

Launch game, load save, press play and see population change

Expected Result​

No sudden change in population

Actual Result​

Significant decrease in population size

Game Version​

1.2.5f1

What mods do you have installed?​

75724: ExtraLib 1.3.11
74417: Unified Icon Library 1.0.13
80529: ExtraAssetsImporter 1.4.4
74604: Anarchy 1.7.10
75250: Better Bulldozer 1.3.11
79020: Static Ploppables [UI Dependency] 5.2.1
79634: Asset Icon Library 3.0
80528: ExtraDetailingTools 1.1.5
75426: I18n EveryWhere 1.3.7.1
77240: Find It 1.3.3
92859: UK Pack 3
76050: Map Texture Replacer 2.1.6
77175: Extra Networks and Areas 1.3.1
100454: China Pack 1
98960: Eastern Europe Pack 2
75728: ExtraLandscapingTools 1.3.3
94094: Japan Pack 3
91931: German Pack 3
75826: Plop the Growables 0.8.2
91930: French Pack 3
104707: Detailed Descriptions (Zone Lot Size Display) 1.0.1
91433: InfoLoom 1.5.1
104485: Static Ploppables 11: USA Northeast Pack 6.0.1
79186: Simple Mod Checker Plus 3.4.1
103826: Terrain Surfaces Pack 1.0
98560: Asset UI Manager 1.1.2
85211: No Vehicle Despawn 1.6
75532: Owl's Uskumru Bay 1
100774: Honefiore Bay
101948: USA Northeast Pack 1
101898: USA Southwest Pack 1.01
94036: [G87] German Inspired Surfaces 1.1
94081: Creator Graffiti Decal Pack 3.1
102255: Static Ploppables 09: China Pack 5.3.1
101106: Mural Decal Pack 1.0
100515: Queen Charlotte Sound, New Zealand 1.0
101733: Static Ploppables 08: Eastern Europe Pack 5.2.2
101421: EchoIsland 回声海岛
95964: Static Ploppables 04: UK Pack 5.2.3
94119: Static Ploppables 02: French Pack 5.2.3
96323: Static Ploppables 05: Modern Architecture 5.2.2
95288: Static Ploppables 03: German Pack 5.2.2
96324: Static Ploppables 06: Urban Promenades 5.2.2
86378: Helsinki
100093: Nagato - Japan 0.9
81157: AreaBucket 0.5.2
77260: Water Visual Tweaks 1.1.3
81336: Parking Lots By Dome 2.2
99200: Edges and Borders Netlane Pack 1.0
96102: [G87] Japanese Inspired Surfaces 1.0
83733: Show Text Trends 1.4
96779: Static Ploppables 07: Japan Pack 5.2.2
79021: Static Ploppables 01: Base Game 5.2.2
77321: Super Fast Building And Leveling 2.1
94394: Lumina 2.0R4
81407: Stiffer Vehicles 1.1.0
97195: Parking Monitor (Beta) 1.0
75993: Tree Controller 1.6.4
76836: Traffic Simulation Adjuster 0.4.2
96718: Road Wear Adjuster 1.0.2
75804: Skyve [BETA] 0.14.0
82414: Dunedin, New Zealand 1.1
81568: Zone Color Changer 1.2.1
78188: Extended Tooltip 1.6.2
80931: Toggle Overlays 1.1.1
95698: Telluride-CO
87948: [G87] Stains and Puddles Decals: Wet Pack 1.1
75816: Advanced Line Tool 1.1.3
95080: Farming Surfaces and Decals 1.0.2
88893: Time & Weather Anarchy 2.0.3
87190: Road Builder [BETA] 0.5.3
80584: Stains and Leakage Decal Pack 1.0
86883: Sint Maarten (SXM) 1.6.1
93112: [G87] French Inspired Surfaces 1.1
89638: Sinnoh
92967: [G87] Street Art Decals 1.1
90641: Hall of Fame 1.9.1
89930: [G87] Urban Surfaces: Paving Pack 1.0
87997: Concrete Tiles Surface Pack 1.0
85158: New Nakanai 1.2
84638: Recolor 1.1.0
84274: Water Mirror Surfaces CS2 Water Pack 1.0.0
79915: Samui Island (Thailand)
80530: EAI - Surfaces Pack 1.1.1
80540: Extra Team Graffiti 1.2
81421: Grates and Covers 1.1.1
80864: Golden Sand Beaches Texture Pack 1.1
80867: White Sand Beaches Texture Pack 1.2
80582: Cities Skylines II Graffiti Decal Pack 1.1
80758: Riverbeds Texture Pack 1.1
80578: Extra3.0 Graffiti Decal Pack 1.0
80585: Sea Foam Decal Pack 1.0
74324: Move It 0.5.3
76662: Cim Route Highlighter 1.22
76061: Home of Chamëleon TBN 1.0.4
76052: Desert Map Theme 1.0
78903: Asset Packs Manager 1.7.0

Affected Feature​

  • Gameplay

Platform​

  • Steam

Additional Information​

Additional Information​

This save has gone through about a year in-game time after patch 1.2.5f1, so any effects from the patch was expected to settle. The two attached saves were saved a couple seconds apart, one saved before exiting the game, the 'pop crash' one saved after returning to game and unpausing.

If I load back into the original save during the same game session, the population doesn't drop.

Save Game​

View attachment Ferrero 310k March Post Commercial Fix.cokView attachment Ferrero 310k March Post Commercial Fix - Pop crash.cok Screenshot 2025-03-20 141635.pngScreenshot 2025-03-20 141648.png

Other Attachments​

View attachment Ferrero 310k March Post Commercial Fix.cokView attachment Ferrero 310k March Post Commercial Fix - Pop crash.cokScreenshot 2025-03-20 141635.pngScreenshot 2025-03-20 141648.png

 
Last edited:
  • 2Like
  • 1
Reactions:
Upvote 6
I see a similar issue. It is repeated if the file is saved after the drop and then the game is restart a second drop will happen. Load the save paused, no drop. On resume, drop.
 
  • 1
Reactions:
splashgod said:

Information​

When reporting a crash, stability or performance problems, please use the Report a Crash button on the earlier screen​

[CLICK] I understand

Required​

Summary​

Significant population drop when loading into save after fresh game launch

Steps to reproduce​

Launch game, load save, press play and see population change

Expected Result​

No sudden change in population

Actual Result​

Significant decrease in population size

Game Version​

1.2.5f1

What mods do you have installed?​

75724: ExtraLib 1.3.11
74417: Unified Icon Library 1.0.13
80529: ExtraAssetsImporter 1.4.4
74604: Anarchy 1.7.10
75250: Better Bulldozer 1.3.11
79020: Static Ploppables [UI Dependency] 5.2.1
79634: Asset Icon Library 3.0
80528: ExtraDetailingTools 1.1.5
75426: I18n EveryWhere 1.3.7.1
77240: Find It 1.3.3
92859: UK Pack 3
76050: Map Texture Replacer 2.1.6
77175: Extra Networks and Areas 1.3.1
100454: China Pack 1
98960: Eastern Europe Pack 2
75728: ExtraLandscapingTools 1.3.3
94094: Japan Pack 3
91931: German Pack 3
75826: Plop the Growables 0.8.2
91930: French Pack 3
104707: Detailed Descriptions (Zone Lot Size Display) 1.0.1
91433: InfoLoom 1.5.1
104485: Static Ploppables 11: USA Northeast Pack 6.0.1
79186: Simple Mod Checker Plus 3.4.1
103826: Terrain Surfaces Pack 1.0
98560: Asset UI Manager 1.1.2
85211: No Vehicle Despawn 1.6
75532: Owl's Uskumru Bay 1
100774: Honefiore Bay
101948: USA Northeast Pack 1
101898: USA Southwest Pack 1.01
94036: [G87] German Inspired Surfaces 1.1
94081: Creator Graffiti Decal Pack 3.1
102255: Static Ploppables 09: China Pack 5.3.1
101106: Mural Decal Pack 1.0
100515: Queen Charlotte Sound, New Zealand 1.0
101733: Static Ploppables 08: Eastern Europe Pack 5.2.2
101421: EchoIsland 回声海岛
95964: Static Ploppables 04: UK Pack 5.2.3
94119: Static Ploppables 02: French Pack 5.2.3
96323: Static Ploppables 05: Modern Architecture 5.2.2
95288: Static Ploppables 03: German Pack 5.2.2
96324: Static Ploppables 06: Urban Promenades 5.2.2
86378: Helsinki
100093: Nagato - Japan 0.9
81157: AreaBucket 0.5.2
77260: Water Visual Tweaks 1.1.3
81336: Parking Lots By Dome 2.2
99200: Edges and Borders Netlane Pack 1.0
96102: [G87] Japanese Inspired Surfaces 1.0
83733: Show Text Trends 1.4
96779: Static Ploppables 07: Japan Pack 5.2.2
79021: Static Ploppables 01: Base Game 5.2.2
77321: Super Fast Building And Leveling 2.1
94394: Lumina 2.0R4
81407: Stiffer Vehicles 1.1.0
97195: Parking Monitor (Beta) 1.0
75993: Tree Controller 1.6.4
76836: Traffic Simulation Adjuster 0.4.2
96718: Road Wear Adjuster 1.0.2
75804: Skyve [BETA] 0.14.0
82414: Dunedin, New Zealand 1.1
81568: Zone Color Changer 1.2.1
78188: Extended Tooltip 1.6.2
80931: Toggle Overlays 1.1.1
95698: Telluride-CO
87948: [G87] Stains and Puddles Decals: Wet Pack 1.1
75816: Advanced Line Tool 1.1.3
95080: Farming Surfaces and Decals 1.0.2
88893: Time & Weather Anarchy 2.0.3
87190: Road Builder [BETA] 0.5.3
80584: Stains and Leakage Decal Pack 1.0
86883: Sint Maarten (SXM) 1.6.1
93112: [G87] French Inspired Surfaces 1.1
89638: Sinnoh
92967: [G87] Street Art Decals 1.1
90641: Hall of Fame 1.9.1
89930: [G87] Urban Surfaces: Paving Pack 1.0
87997: Concrete Tiles Surface Pack 1.0
85158: New Nakanai 1.2
84638: Recolor 1.1.0
84274: Water Mirror Surfaces CS2 Water Pack 1.0.0
79915: Samui Island (Thailand)
80530: EAI - Surfaces Pack 1.1.1
80540: Extra Team Graffiti 1.2
81421: Grates and Covers 1.1.1
80864: Golden Sand Beaches Texture Pack 1.1
80867: White Sand Beaches Texture Pack 1.2
80582: Cities Skylines II Graffiti Decal Pack 1.1
80758: Riverbeds Texture Pack 1.1
80578: Extra3.0 Graffiti Decal Pack 1.0
80585: Sea Foam Decal Pack 1.0
74324: Move It 0.5.3
76662: Cim Route Highlighter 1.22
76061: Home of Chamëleon TBN 1.0.4
76052: Desert Map Theme 1.0
78903: Asset Packs Manager 1.7.0

Affected Feature​

  • Gameplay

Platform​

  • Steam

Additional Information​

Additional Information​

This save has gone through about a year in-game time after patch 1.2.5f1, so any effects from the patch was expected to settle. The two attached saves were saved a couple seconds apart, one saved before exiting the game, the 'pop crash' one saved after returning to game and unpausing.

If I load back into the original save during the same game session, the population doesn't drop.

Save Game​

View attachment 1268795View attachment 1268796View attachment 1268797View attachment 1268798

Other Attachments​

View attachment 1268795View attachment 1268796View attachment 1268797View attachment 1268798
Click to expand...
For those of you who are experiencing this population drop "bug" -- this is by design. Part of the under-the-hood simulation changes made for the 1.2.5f1 patch causes a sudden drop in population the first time you load into a save with the new patch. Don't worry, you only need to wait a few in-game months for the population to rebound.
 
  • 1
Reactions:
To me it did it several times after some simulation being ran (3x 7-10 hours of simulation to get population back where it was around 790-810k people) and it keeps on removing 40-80k people. I managed to make a save right before the point where it does it again so the trigger happens some 5-10 seconds after loading. I have a previous save where i can play between 10 minutes and 2 hours without it happening AGAIN.

Long story short:
  • Seniors update>removed seniors = ton of uneployment (30%), found a lot of office, big office and comertial with only 5 workers, deleted, lowered uneployment by 15-20% to 6-10% eventualy
  • Homeless update > removed homeless and 40k initialy, ran simulation back to number of population i had, it removed 60k people then... ran simulation AGAIN to get to around 795k again but kept making saves close to each other and pushed population to 810k... and it deletes 60-80k people... AGAIN.

What's also noticable:
  • tourists? piling up at the edge of the city and waiting to get to their destinations and that destinations tourists go to are leisure, food, parks and schools (i guess hang around areas).
  • empty industry buldings despite small demand for more industry (that spawns once i destroy some of the empty industry buildings),
  • no info in the demand for commertial panel since the update from time to time if there's no need for it (amd need for it later on but spawning only low density ones and no high density on zoning them)
  • return (far less but can be found) of high density offices with 5 workers
  • this has been there since the start - no info on amount of workers working in warehouses
  • crime scene on outer connection (from the first few months of the game) - people reported it on flights i have it on harbor connection
My save file with the imminent deletion event is attached.

My vod of playing with different saves before that event is here:
 

Attachments

  • share this one BUG.cok.zip
    176,2 MB · Views: 0
  • 2
Reactions:
Daameer said:
To me it did it several times after some simulation being ran (3x 7-10 hours of simulation to get population back where it was around 790-810k people) and it keeps on removing 40-80k people. I managed to make a save right before the point where it does it again so the trigger happens some 5-10 seconds after loading. I have a previous save where i can play between 10 minutes and 2 hours without it happening AGAIN.

Long story short:
  • Seniors update>removed seniors = ton of uneployment (30%), found a lot of office, big office and comertial with only 5 workers, deleted, lowered uneployment by 15-20% to 6-10% eventualy
  • Homeless update > removed homeless and 40k initialy, ran simulation back to number of population i had, it removed 60k people then... ran simulation AGAIN to get to around 795k again but kept making saves close to each other and pushed population to 810k... and it deletes 60-80k people... AGAIN.

What's also noticable:
  • tourists? piling up at the edge of the city and waiting to get to their destinations and that destinations tourists go to are leisure, food, parks and schools (i guess hang around areas).
  • empty industry buldings despite small demand for more industry (that spawns once i destroy some of the empty industry buildings),
  • no info in the demand for commertial panel since the update from time to time if there's no need for it (amd need for it later on but spawning only low density ones and no high density on zoning them)
  • return (far less but can be found) of high density offices with 5 workers
  • this has been there since the start - no info on amount of workers working in warehouses
  • crime scene on outer connection (from the first few months of the game) - people reported it on flights i have it on harbor connection
My save file with the imminent deletion event is attached.

My vod of playing with different saves before that event is here:
Click to expand...
Thank you for sharing this, very thorough.

I’ve noticed a few patterns on my city (initial population of 750K, now at about 620K and still falling):

- the healthcare coverage is zero at every startup lately after loading a save. Everything appears read on the networks in the Happiness infoview. Takes about 10 minutes for regular healthcare coverage to come back.

- in addition to the empty industrial and commercial zones you mentioned, I also have empty low density residential spread throughout the city. This is especially strange because even though the citizens complain about wanting “larger housing” and demand being zero for low density residential, I have a ton of citizens constantly leaving.

- a have a small number of high density office with 5/5 staffs, but I have a lot more high density commercial having that issue.

- I also have a persistent death wave that started around 6 months ago that no matter how many crematoriums I add, the number of recently deceased citizens just keeps going up.

Basically, my city is falling apart. It’s a bummer since I’ve been playing this city since last September. Hopefully they can get a fix in soon.
 
Game Update: After running the game yesterday and today:
  • Population pushed to 815k with often saves but it did reset again (-60k people) and we waited on stream that it climbs back up to 810k... Then:
  • Only low-density gas stations spawn (EU/NA styles); no other low-density types or high-density commercial zones appear.
  • Tourists: Still clustering on a corner.
  • Game deletes only around 8-10k people every time it gets back to 810-811k population and there are mini death waves happening around (with crematoriums having more stored than their capacity).
  • Commercial Issues: Something feels off, but hard to pinpoint. Numbers shown in info loom are crazy (280000% need?).
  • Car Trailer Glitch: A stuck car trailer caused a jam but deleting it didn’t prevent the population from resetting.
You can see the VOD from today (I wanted to push the population up a bit and switch to a different game, but then it kept on deleting so we let the sim run... on stream):

 
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