Cities: Skylines

Cities: Skylines

View Stats:
b06 Aug 20, 2024 @ 2:19pm
FPS: got about as low as 20 fps on city of 150k
Hardware Specs:

system:
Processor AMD Ryzen 9 7900X 12-Core Processor 4.70 GHz
Installed RAM 64.0 GB (63.2 GB usable)

AMD Adrenalin Edition:
GPU1 - AMD Radeon RX 7800 XT - Primary/Discrete
VRAM1 - 16368 MB - GDDR6 2438 MHz
Graphics - AMD Radeon RX 7800 XT
Graphics Manufacturer - Powered by AMD
Usable Memory Size - 16368 MB
Core Clock - 2124 MHz
Memory Type - GDDR6
Memory Clock - 2438 MHz
Memory Bit Rate - 19.50 Gbps
Total Memory Bandwidth - 624 GByte/s
BIOS Part Number - 113-EXT90440-100
BIOS Version - 022.002.001.021
BIOS Date - 2023/08/09 22:26
Device ID - 747E
Revision ID - C8
Vendor ID - 1002
SubSystem ID - 7801
SubSystem Vendor ID - 1EAE
Bus Type - PCI Express 4.0
Current Bus Settings - PCI Express 4.0 x16

OS specs:

Edition Windows 11 Home
Version 23H2
Installed on ‎7/‎24/‎2024
OS build 22631.4037
Experience Windows Feature Experience Pack 1000.22700.1027.0
Last edited by b06; Aug 20, 2024 @ 2:29pm
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Showing 1-9 of 9 comments
b06 Aug 20, 2024 @ 2:36pm 
i'm just checking to see how this works out
GGcake Aug 20, 2024 @ 4:14pm 
The problem is you downloaded Cities Skylines
Tsubame ⭐ Aug 20, 2024 @ 4:14pm 
40-60 FPS is standard to this game. Do not expect this to run in the hundreds of FPS.

Graphics and GPU is not the issue, the issue is the simulation, which is very heavy on the CPU. You will notice larger cities will in general run slower than smaller cities, especially if you use lots of specific CPU heavy mods, and/or have older lower end CPUs.
Maxxwell Aug 20, 2024 @ 4:33pm 
Does the FPS increase if you reduce graphic specs on game, ie shading, distance, etc.?
Tsubame ⭐ Aug 20, 2024 @ 4:41pm 
Originally posted by Maxxwell:
Does the FPS increase if you reduce graphic specs on game, ie shading, distance, etc.?

It might improve performance a bit, especially if visual mods are used and/or in a lower end GPU.

That being said, this game is CPU heavy, not GPU. Even at 4k resolution this game will only use about 6 GB vRAM and usually show no signs of GPU encumberment, in newer video cards anyway.
b06 Aug 20, 2024 @ 5:24pm 
yeah that it's kinda awful not gonna lie
Last edited by b06; Aug 20, 2024 @ 5:24pm
b06 Aug 20, 2024 @ 5:25pm 
even with my bazillion threads and cores on a very new CPU it still gets kinda of slow... And at first i thought it was ram... Also. the game has the same speed in vanilla, but the save game has mods. Perhaps theoretically it would run the same in vanilla just like in a regular ol' modded game.
Last edited by b06; Aug 20, 2024 @ 5:28pm
Tsubame ⭐ Aug 20, 2024 @ 7:38pm 
This is one of the most CPU intensive software/games of the market, which is not surprising given the agent based system the game has decided to use. Other games with similar pathfinding mechanics - i.e. Transport Fever 1 or 2 - also suffer from this issue.

Paths for active agent or vehicle in the map has to be individually calculated and while one will not do much, dozens of thousands will, especially in very large networks.

Even something as simple as Excel can make a 13900K lag, if enough calculations are involved. Which certainly is the case in this game.

Also, from what I have read, the game uses up to 8 threads, it will definitely not use every single thread available from your CPU.
MarkJohnson Aug 20, 2024 @ 11:19pm 
Originally posted by b06:
Hardware Specs:

system:
Processor AMD Ryzen 9 7900X 12-Core Processor 4.70 GHz
Installed RAM 64.0 GB (63.2 GB usable)

AMD Adrenalin Edition:
GPU1 - AMD Radeon RX 7800 XT - Primary/Discrete
VRAM1 - 16368 MB - GDDR6 2438 MHz
Graphics - AMD Radeon RX 7800 XT
Graphics Manufacturer - Powered by AMD
Usable Memory Size - 16368 MB
Core Clock - 2124 MHz
Memory Type - GDDR6
Memory Clock - 2438 MHz
Memory Bit Rate - 19.50 Gbps
Total Memory Bandwidth - 624 GByte/s
BIOS Part Number - 113-EXT90440-100
BIOS Version - 022.002.001.021
BIOS Date - 2023/08/09 22:26
Device ID - 747E
Revision ID - C8
Vendor ID - 1002
SubSystem ID - 7801
SubSystem Vendor ID - 1EAE
Bus Type - PCI Express 4.0
Current Bus Settings - PCI Express 4.0 x16

OS specs:

Edition Windows 11 Home
Version 23H2
Installed on ‎7/‎24/‎2024
OS build 22631.4037
Experience Windows Feature Experience Pack 1000.22700.1027.0

It sounds like you have hit the vehicle limit. Once you start nearing it, then the game starts slowing down.

You should be able to notice it when the game hits the 50% mark. The vehicle limit is only 16k, so at 8k, you should start noticing it to be a bit slower.

for example, at x3 speed, the game process a 24-hour day in 3-seconds on an empty map.

but when you start filling the map, the vehicles start piling up, and soon you are at 8k on the vehicle limit, so the game runs 50% slower, or a 24-hour days takes roughly 6-seconds. and a x3 speed of 10-seconds per day is using all of the 16k vehicle agents. Then the game will get slower and slower as it tries to add more agents, but can't.

Throw in game changing mods and a ton of them, then you will get even worse performance.

I like using the "watch It! mod" for tracking agents. it seems to have them all:
https://steamcommunity.com/sharedfiles/filedetails/?id=1643902284
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Date Posted: Aug 20, 2024 @ 2:19pm
Posts: 9