Cities: Skylines

Cities: Skylines

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Performance Tuning Guide - Cities Skylines
Von aubergine18
Game running slow? This guide has some tips for making it load and run faster...

Note: This is an extension to the Main Troubleshooting FAQ.
 
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Reduce load times
Faster loading main menu

Delete unwanted save games (maybe back them up first?) and you'll get to the main menu faster; weirdly it will also speed up the game as well!

Locations of save folders can be found in Appendix E of the Main Troubleshooting FAQ.

Faster loading of saves

The more workshop assets you install, the longer games will take to load. Each new asset exponentially increases game load time, and if you have too many the game will lag horribly and maybe even crash. Curb your Subscription Addiction!
Quick fps boost
For an immediate fps boost:
  • Disable (or reduce amount of) Shadows via the game's Options screen
  • Disable "Film Grain" (drag slider to 0) via game's Options screen
  • Enable V-Sync in game's Options screen (if this causes mouse to not match up to buttons, set screen resolution to one that is natively supported by both graphics card and monitor).
  • Disable Clouds
  • More tips here[www.gameplayinside.com]
Mods
All mods reduce fps

The more mods and assets you subscribe to, more work the computer has to do; unsubscribe anything you don't regularly use to reduce CPU and GPU load.

Remove broken mods

Unsubscribe any broken mods (don't just disable them, complete unsubscribe them).

The following mods are known to cause fps drop in-game:

Enahnced Zoom (turn off the zoom to cursor option in it's config)
Favorite Cims
Traffic++ (devs are working hard to fix this)
Transport Lines Manager

Additional graphics options

Use Dynamic Resolution mod to scale to a smaller internal resolution

Use More Options mod to disable things like smoke and tweak other graphics settings.

Custom UI skins

WARNING: Sapphire UI and all skins are currently broken since 1.1.1b patch :(

Use custom UI such as Silicon Skin to prevent the map from getting squished by the toolbar; this increases fps slightly.
Assets
Curb your subscription addiction, especially for growables (residential, commercial, industry, offices). The more assets you have, the slower the game will run, especially for assets that have LODs with >150 tris.

Check filesizes before installing assets – anything over 10MB, especially for smaller buildings, should probably be avoided.

Use this mod to find bloated assets:

http://steamcommunity.com/sharedfiles/filedetails/?id=453956891
Guidance for Asset Authors:
Ursprünglich geschrieben von CO_Dae:
The model size is not limited other than by Unity's limit of about 65000 vertices per mesh, but even approaching that is too much for single assets. To give some rough guidelines, the triangle count of the building models in the stock game ranges from less than 1000 triangles for the smallest and simplest buildings to about 5000 for large and complex buildings. A few exceptional buildings use up to 10-15k triangles. Vehicles typically have 500-1000 triangles, while trees vary from a few hundred for simple bushes to about 2000 for the more complex ones. Also note that a large number of props can also make the asset rendering slower, which is why there is a limit in the asset editor.
Graphics Card
Use latest drivers

Make sure you're using the latest drivers, direct from the manufacturer website, for your graphics card.

Avoid overheating graphics card

If your graphics card is overheating (>70ºC), it will throttle itself and often causing significant fps loss. If you think that is happening, it's better to limit fps to prevent it overheating. You can use mods like Frame Limit on 30fps or alternatively use the -limitfps Launch Parameter to set a custom fps limit.

Graphics cards will sometimes overheat if you overclock them. There's no point overclocking a graphics card if it overheats causing it to throttle to a speed lower than before you overclocked it.

Don't use integrated graphics

If your computer has integrated graphics in addition to a real graphics card, make sure it's using the real graphics card (instructions here[steamcommunity.com]) as it will be much, much faster.
Windows: Nvidia SLI
If you have two Nvidia cards, you can use the following settings to boost performance of the game (thanks to Shaowdane for this tip):
  • Install Nvidia Inspector[www.guru3d.com]
  • If you haven't used Nvidia Inspector before, read this guide[wiki.step-project.com]
  • Use these settings for your Cities:Skylines profile:
    • SLI Compatiblity Bits (DX1x): 0x202121F5
    • Nvidia Predefined # of GPUs to use on SLI for DX10: SLI_PREDEFINED_GPU_COUNT_DX10_FOUR
    • Nvidia Predefined SLI mode on DX 10: SLI_PREDEFINED_MODE_DX10_FORCE_AFR2
Windows: GTX770
Add the following Launch Parameter:

-force-d3d9
Windows: DirectX and VC Runtime
This is not for the feint hearted and you should take a complete system backup before doing it. Doing this may cause problems with other games or applications (although you can usually follow normal upgrade/update steps to get back to more recent versions).

DirectX

Use the DirectX drivers that the game was developed with:

....\Steam\steamapps\common\Cities_Skylines\_CommonRedist\DirectX\Jun2010\DXSETUP.exe

Visual C Runtime

Use the Visual C Runtime that the game was developed with:

...\Steam\steamapps\common\Cities_Skylines\_CommonRedist\vcredist\2010\vcredist_x64.exe ...\Steam\steamapps\common\Cities_Skylines\_CommonRedist\vcredist\2010\vcredist_x86.exe

(Thanks to Daimyo for the tips in this section)
Windows: Verify disk integrity and check pagefile
To check pagefile, see Microsoft website[windows.microsoft.com] for details.

Also, check your hard drive for bad sectors with a tool such as Ultimate Boot CD[www.ultimatebootcd.com] (thanks to FireFlowerist[forum.paradoxplaza.com] for these tips).
Got any other tips?
Please share any other tips in the comments below.
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26 Kommentare
Klershwagen 15. Nov. um 10:42 Uhr 
@Baleur , i have about the same config (i7 4790k, 1080gtx, HDD, 32GB RAM) and have 300+ fps on an empty map, vanilla game. When I have about 500k cims, with 250+ mods and assets, it goes down to 10 fps then. Empty map with full mods is around 75 fps. You may be doing some things wrong
Baleur 12. Nov. um 12:13 Uhr 
Nothing works.
intel i7, 32gb ram, 1070gtx, SSD. Always stuck at 14fps at medium zoom, 30fps on an empty map. Even without any mods or assets what so ever. Totally broken game. Sigh.
Jackson Evans 30. Sep. um 2:26 Uhr 
this guide is no longer compleet. i cannot find these options.
Kiso4ka 21. Sep. um 1:11 Uhr 
70ºC = great temperature for my GPU. Summer, i play with 80-100ºC c:
AMD so hot gpu's
Tommy Wiseau 11. Mai um 4:31 Uhr 
Is there no low res mod like their is for SkyRim?
xxx78 17. Feb. um 12:06 Uhr 
I did all in this guide except DirectX and VC Runtime tweaks and I gained nothing. Maybe this have to do with running gtx 980, since changing shadows and details had no effect. The Sli tweak dont work sadly....would be great to have sli in this game.

So either this guide is dated or it only work for weaker pc's, or I can be wrong :)
Exes | LF 3s Team 3. Okt. 2016 um 11:36 Uhr 
Thanks
Nabushi 11. Sep. 2016 um 16:47 Uhr 
thanks for the sli tweak, sli was not working for me. Great guide.
Aithemed 26. Aug. 2016 um 0:51 Uhr 
somebody can help me? I have 16 fps at day time (is fine for me) but I lost 7 fps at night + 4 fps if I zoom in a building with a lot of light, like (internacional airport, train station, Highschool) what can I do? I dont want turn off day/night cycle.
Rigatoni04 6. Juli 2016 um 10:07 Uhr 
i need more help than this.... when i play on my pc, i at least get 2fps. it is TERRIBLE,i mean TERRIBLE! i used to get a good 15, but it dropped slowly over time. (even after i followed this guide!) ps. i have windows