Simulation Lag

[Citybuild122]

I'm having simulation lag on a city with about 16K population.
I've done a 64GB pagefile, a little bit of improvement.

PC Specs:
Ryzen 3900x
Titan XP 12GB VRAM
32 GB RAM


No FPS drop, just simulation lag. I've got a fair bit of mods. Disabled all of them and had the same result.

[wilky]

Recently I had a mid size city (~25k) grind to a halt, and the traffic was decent like 80+% so I wasn't understanding the issue at first... but then upon closer inspection, I had just installed a cable car line, but one of the cable car stations wasn't receiving water/sewage, so I think there was like this infinite line of cable cars that couldn't dock at the station causing the entire sim to lag. As soon as I connected it to water, the sim sped back up to triple speed, etc.

So it's hard to say. There are lots of random reasons why this sim can bog down...

[snowflitzer]

Even with 32GB, you might want a dedicated pagefile.

https://steamcommunity.com/sharedfiles/filedetails/?id=2114415052

[Citybuild122]

Originally posted by snowflitzer:

Even with 32GB, you might want a dedicated pagefile.

https://steamcommunity.com/sharedfiles/filedetails/?id=2114415052

Already done a pagefile.

[snowflitzer]

is it fixed or dynamic?

[Citybuild122]

Originally posted by snowflitzer:

is it fixed or dynamic?

Fixed I'm pretty sure. 64GB. Didn't make a difference. I have the tool that's recommended to show much ram the game is using and it's using 7GB of physical, 14GB of virtual.

[Citybuild122]

If a mod is disabled, could it still be causing problems? I have a decent bit of mods that could be the culprit.

Or is it just the bad optimization of the game?

[BucketBrain]

Originally posted by Citybuild122:

If a mod is disabled, could it still be causing problems? I have a decent bit of mods that could be the culprit.

Or is it just the bad optimization of the game?

Yes , it is better to unsubscribe than only disable them in general and to be sure there is no mod code in the background any more , you could delete the mod folder in your game files too

[MarkJohnson]

Originally posted by Citybuild122:

I'm having simulation lag on a city with about 16K population.
I've done a 64GB pagefile, a little bit of improvement.

PC Specs:
Ryzen 3900x
Titan XP 12GB VRAM
32 GB RAM


No FPS drop, just simulation lag. I've got a fair bit of mods. Disabled all of them and had the same result.

How bad is lag?

x1 speed is 10 seconds per day (24hours)
x2 is 6 seconds
x3 is 3 seconds.

[Citybuild122]

Originally posted by BucketBrain:

Originally posted by Citybuild122:

If a mod is disabled, could it still be causing problems? I have a decent bit of mods that could be the culprit.

Or is it just the bad optimization of the game?

Yes , it is better to unsubscribe than only disable them in general and to be sure there is no mod code in the background any more , you could delete the mod folder in your game files too

I've unsubscribed from a lot of mods that probably had some compatibility problems. I'll update and see what that does on a new save.

[Citybuild122]

Originally posted by MarkJohnson:

Originally posted by Citybuild122:

I'm having simulation lag on a city with about 16K population.
I've done a 64GB pagefile, a little bit of improvement.

PC Specs:
Ryzen 3900x
Titan XP 12GB VRAM
32 GB RAM


No FPS drop, just simulation lag. I've got a fair bit of mods. Disabled all of them and had the same result.

How bad is lag?

x1 speed is 10 seconds per day (24hours)
x2 is 6 seconds
x3 is 3 seconds.

I'ts not terrible, but really terrible to play with. 3 times probably takes 5 seconds. Considering my city only has a population of 15K, it's pretty bad.

[MarkJohnson]

Originally posted by Citybuild122:

Originally posted by MarkJohnson:

How bad is lag?

x1 speed is 10 seconds per day (24hours)
x2 is 6 seconds
x3 is 3 seconds.

I'ts not terrible, but really terrible to play with. 3 times probably takes 5 seconds. Considering my city only has a population of 15K, it's pretty bad.

well, mods are extra resources added to the game. They can use up a lot of resources, so x2 speed with all of your workshop is likely the issue.

Try to temporarily launch the game with the -disableMods flag and see how the lag is? This way you don't need to disable or unsubscribe any mods. Just remove the -disableMods flag when finished.

If it won't load, it is likely you have used a mod that is required in the game in order to load.

[me22ca]

If you want to quantify things better: https://steamcommunity.com/sharedfiles/filedetails/?id=1899449152