Cities Skylines 2: Low FPS fix

Cities Skylines 2: Low FPS fix

This guide is aimed to provide guidance on graphics setting in the game. Mark ones that have the most and least impact on performance so that you can tune your settings to get the most quality possibly on your hardware.

The game tested on the following configuration:
AMD 5800X3D
RTX 4090
4k Resolution

Quick Fix

Clouds Quality – Medium or lower
Volumetrics Quality – Medium or lower
Global Illumination – DISABLE
Depth of Field – DISABLE

Graphics settings impact

Baseline configuration:
Resolution – 3840×2160
Global Graphics Quality – Very Low

Baseline result: 181 FPS

Depth of Field HIGH: 125 FPS (31% reduction)
Depth of Field LOW: 156 FPS

Global Illumination DISABLED: BASELINE
Global Illumination HIGH: 134 FPS (26% reduction)
Global Illumination MEDIUM: 142 FPS
Global Illumination LOW: 148 FPS

Ambient Occlusion DISABLED: BASELINE
Ambient Occlusion HIGH: 167 FPS (8% reduction)
Ambient Occlusion MEDIUM: 168 FPS
Ambient Occlusion LOW: 175 FPS

Dynamic Resolution CONSTANT: BASELINE
Dynamic Resolution AUTOMATIC: 121 FPS (33% reduction)
Dynamic Resolution DISABLED: 121 FPS

Anti-Aliasing HIGH SMAA: 166 FPS (8% reduction)
Anti-Aliasing LOW SMAA: 164 FPS
Anti-Aliasing FXAA: 166 FPS (Note: possibly conflicts with Dynamic Resolution setting, needs clarification)

Clouds Quality HIGH: 145 FPS (20% reduction)
Clouds Quality MEDIUM: 150 FPS
Clouds Quality LOW: 166 FPS

Fog Quality ENABLED: 164 FPS (9% reduction)

Volumetrics Quality DISABLED: BASELINE
Volumetrics Quality HIGH: 172 FPS (5% reduction)
Volumetrics Quality MEDIUM: 172 FPS
Volumetrics Quality LOW: 174 FPS

Reflections Quality DISABLED: BASELINE
Reflections Quality HIGH: 158 FPS (13% reduction)
Reflections Quality MEDIUM: 158 FPS
Reflections Quality LOW: 161 FPS

Motion Blur Quality DISABLED: BASELINE
Motion Blur HIGH: 168 FPS (7% reduction)
Motion Blur MEDIUM: 169 FPS
Motion Blur LOW: 169 FPS (Note: test scene is static, result may not worth much)

Shadow Quality HIGH: 163 FPS (10% reduction)
Shadow Quality MEDIUM: 168 FPS
Shadow Quality LOW: 178 FPS (Note: high FPS variation with this setting enabled)

Terrain Quality HIGH: 161 FPS (11% reduction)
Terrain Quality MEDIUM: 161 FPS
Terrain Quality LOW: BASELINE

Water Quality HIGH: 169 FPS (7% reduction)
Water Quality MEDIUM: 164 FPS (???)
Water Quality LOW: BASELINE

Level of Detail HIGH: 150 FPS (17% reduction)
Level of Detail MEDIUM: 150 FPS
Level of Detail LOW: 158 FPS
Level of Detail VERY LOW: BASELINE

Animation Quality HIGH: 175 FPS (3% reduction)
Water Quality MEDIUM: BASELINE (Note: test scene is static, result may not worth much)

Texture Quality HIGH: 169 FPS (7% reduction)
Texture Quality MEDIUM: 174 FPS
Texture Quality LOW: 176 FPS
Texture Quality VERY LOW: BASELINE


  • 0 Population
  • Game on Pause
  • Camera is pointing in the way to have horizon line on top 10% of the screen
  • Trees, roads, water, sky, mountains in line of sight
  • Save file (TODO: share the save file)

FPS measurements taken from Steam’s FPS counter over 10 seconds. Top and bottom 10% are discarted, then arithmetic mean is taken between lowest and highest remaining results.


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