Unlocking Smooth Gameplay: The Ultimate Cities Skylines Settings for Low End PC (Better FPS & Less Lag)

Cities: Skylines is widely regarded as the king of the city-building genre. However, for those of us gaming on a laptop with integrated graphics, an older desktop, or a machine without a dedicated GPU, the game can quickly turn into a slideshow. As your population climbs past 10,000, the simulation chugs, the frame rate drops, and the famous "simulation speed" slows to a crawl.

If you are searching for the best Cities Skylines settings for low end PC better performance, you have come to the right place. You do not need a $2,000 rig to enjoy this game. With the right tweaks inside the game, your operating system, and the Steam launch options, you can double your frame rate.

Here is the definitive guide to making Cities: Skylines playable, and even enjoyable, on low-end hardware.

Summary of Priorities

  1. Resolution: Drop to 720p first.
  2. Shadows: Turn to Low/Off second.
  3. Grass/Water: Turn to Low third.

By following this, you should see a massive jump in FPS and a reduction in the "simulation lag" (where cars stop moving in real-time).

Running Cities: Skylines (CS1) or Cities: Skylines II (CS2) on a low-end PC requires aggressive optimization, as these games are notoriously heavy on both RAM and CPU. The most effective way to gain FPS is to disable visual effects that don't impact the simulation itself. 🛠️ Essential In-Game Graphics Settings

The following settings provide the highest performance boost when lowered or disabled. High Impact (Turn OFF or LOW)

Depth of Field: Disable completely. This is purely cinematic and very taxing.

Shadows: Set to "Low" or "Disabled". Shadows are often the biggest GPU hog.

Volumetrics (CS2): Set to "Disabled". This controls clouds and fog, which can tank your FPS.

Dynamic Resolution: Set to "Constant" or "Disabled". While it saves FPS, it often makes the game look excessively blurry. Global Illumination: Set to "Low" or "Disabled". ⚖️ Moderate Impact (Tweaking)

Level of Detail (LOD): Set to "Low". This reduces the quality of distant objects but keeps the simulation running smoother.

Anti-Aliasing: Use "Low SMAA" or "FXAA". Avoid TAA as it can add blur on low-end hardware.

Resolution: Drop to 1920x1080 or even 1280x720 if you are on an integrated GPU. 🏗️ Technical Fixes for Performance

Beyond graphics, these technical adjustments help manage the heavy simulation load.

Increase Page File (Virtual Memory):This game "eats" RAM. If you have 8GB or less, manually set your Windows Page File to 16,384MB or 32,768MB to prevent crashes during loading.

Launch Options (Steam):Right-click the game > Properties > Launch Options. Add:

-force-d3d9: Forces the game to run on DirectX 9, which can be faster for very old GPUs.

-noLog: Disables the log file, saving a tiny bit of processing power on older machines.

High Performance Mode:Ensure Windows is set to use your GPU for the game. Search "Graphics Settings" in Windows and set Cities.exe to "High Performance". 📦 Essential Optimization Mods (CS1)

If you are playing the original Cities: Skylines, these mods are non-negotiable for low-end builds:

Performance Tuning Guide - Cities Skylines - Steam Community

Cities: Skylines running smoothly on a low-end PC, you should focus on

disabling high-impact post-processing effects and lowering shadow settings . These are generally the biggest "frame killers". Core Graphics Settings

For the best performance boost, adjust these in-game settings: . This can provide up to a 15% increase in FPS. Depth of Field

. This is a major resource drain and disabling it can significantly boost frame rates. Volumetrics Quality

. This affects cloud and fog rendering and is often one of the heaviest settings on the GPU. Level of Detail (LOD)

. This controls how many objects are rendered at a distance, heavily reducing the load on your graphics processor. Texture Quality : Set based on your VRAM— if you have less than 2GB, for 2GB, and only if you have 3GB or more. Anti-aliasing to reduce jagged edges without a massive performance hit. Cities Skylines - Best Settings for Low-End PC

Part 1: In-Game Graphics Settings

Go to Options > Graphics and apply these settings. The logic behind each setting is included so you know what to tweak if you need even more performance.

Final Verdict

Cities: Skylines on a low-end PC is playable if you manage expectations. Expect 20-30 FPS in a new city, dropping to 15-20 FPS at 40k population. Avoid ultra-high resolutions, never use dynamic weather, and always play in fullscreen. The FPS Booster mod is non-negotiable – it alone can double your framerate on integrated graphics like Intel HD 620 or AMD Vega 3.

Would you like a list of specific low-spec city plans (e.g., grid-only, no props) to further reduce lag?

6. Mods That Improve Low-End Performance (Use Sparingly)

If you must use mods (contradicts -disableMods), these are safe:

| Mod Name | Function | RAM overhead | |----------|----------|---------------| | FPS Booster | Removes unnecessary UI redraws, culls off-screen objects | +50 MB | | Loading Screen Mod (LTSM) | Shares textures between assets (requires v1.13+ patch) | -400 MB | | No Radio | Disables radio music script updates | -30 MB CPU |

Avoid: Dynamic resolution mods (cause instability), HD texture packs, and traffic AI mods.

2. Set Priority in Task Manager

  • Launch Cities: Skylines.
  • Open Task Manager (Ctrl+Shift+Esc) > Details > Right-click Cities.exe > Set Priority > High.
  • Note: Not "Real-Time" (that crashes). Just "High."