Slow simulation at around 100k of pop

[Eras]

Hi all, i have this problem that the simulation go very slow at around 100k pop.. it is normal?
I have a ryzen 7 2700x, rtx 4070ti and 32 gb of ram

[General Zod ™]

This issue is a bug. After CERTAIN population depending on how OPTIMIZATION levels in the city, it becomes slow even at x3. It has nothing to do with hardware. I loaded my 3 Cities, a 500k, a 950k and a newer highly optimized map on 5 different computers and all run exactly identical no matter the hardware. It's slightly faster on the 4090 with i7 but not by much. I think we should keep an eye on their goal, to LAUNCH on CONSOLES by NOV 2024. This game in its current state will not pass Console strict Quality requirements. There is the rule on console that a game must be functional at all stages in its game and must not mislead players. They got away with BETA release on pc because steam doesn't check for quality like Xbox, playstore and others who FINE developer's for misleading players.

I'm anxious to see how Xbox and other consoles will deal with this issue. Rigs I tested on exceed consoles cpu and gpu by far.

[Nerpaderp]

This is a real thing, BUT one thing ive observed is that when you build an AIRPORT and create the flight lines, the simulation takes a big hit, i think the right time to build an airport really coincides with the 80k - 100k pop zone when you can afford/justify it.

I recently had a city running super smooth at 90k pop. As soon as i built the airport i say the sim start to slow and even stutter for the first time.

Also i remember in CS1 when the Airports expansion first came out, building an airport with an open-ended taxiway-runway system could render the game unplayable (completely frozen) and i believe it was related to the plane path-finding....they fixed it for the most part, but never completely removed the performance hit that came with a bustling airport in CS1.
I wonder if they are struggling with the same issues here?

Has anyone tried to push the upper bounds of population WITHOUT building an airport to see if you can push the pop higher without the sim slowing down?

[Cosmic Sea]

Personally i gave up on this game (until mods and asset editor are in) when I hit this. I still got my 600k population, but it was just a matter of leaving the game running unattended for days on end. Not fun at all. Plus all the damn buildings look the same all over my city so its a snooze fest until we get new assets.

[notreal]

its slightly (very slightly, no "fix") better now, however you should also know it heavily depends on how the city is built. My own city with only 140k population is much slower than another city with over 300k population.

[notreal]

@Nerpaderp airport has no significant performance hit in itself from what i can see.

[killerskull]

I was really hoping the latest patch would fix this but it seems it hasnt. Im stuck at 190k pop. It is rising faster than before but I will still need to afk for hours. My med and high density have 0 demand. If I place homes, people will move in but I dont want that atm. So its just a waiting game to see all the units fill up and the demand grows.

[sams19]

RIP to the perma ban players that attempted to warn others.

[jq371]

I have a pop over 500,000 - the game was not running super smooth before the patch but still playable and moving at a pretty good pace - since the patch everything has slowed down to a snails pace....... i cant play it now

[Major Kudos™]

Publicado originalmente por Eras:

Arrr this sucks :/

Yes it does.

[Viking2121]

Try 400k, If I try to make the game faster, its actually slower than with it on the slowest speed lol

[Lord of RROD]

The game algorithms seem to rely heavily on the CPU. they probably need to optimize this and if possible off some load to the gpu. a combination of gpu accelerated AI and tricks should make it better. as right now even high end PCs struggle. I wonder what the computer specs of the game testers? did they test at high population?

[Lord of RROD]

Publicado originalmente por ***:

its slightly (very slightly, no "fix") better now, however you should also know it heavily depends on how the city is built. My own city with only 140k population is much slower than another city with over 300k population.

are the roads and services distributed better in the 300k? it's probably problem with the pathfinding. when a cim needs to travel far away then have to test for paths to destination including roads rules, lanes and transportation .

[Viking2121]

Publicado originalmente por Lord of RROD:

The game algorithms seem to rely heavily on the CPU. they probably need to optimize this and if possible off some load to the gpu. a combination of gpu accelerated AI and tricks should make it better. as right now even high end PCs struggle. I wonder what the computer specs of the game testers? did they test at high population?

They probably didn't test at high population or kept everything zoomed out if they did, After a point even the 14900k struggles in areas at 500k pop, and 500 isn't like unrealistic to achieve, and the game doesn't scale well across threads after a point either from what I've seen, though it does hammer my 5900x pretty hard now, before it didn't, like it sat around 30 - 40% and not much higher, now it sits at 80 - 90, peaks to 100% at times, performance is still power point when zoomed into one of my busy intersections on my 424k pop city atm.

Im trying to get the pop as high as I can so I can further do some tests later on when I decide to build a new machine or for other systems to see how they do, I'd like to see my 1650 laptop melt from it lol

[pkmis007]

What are all of you talking about ? don't u see a topic that play at 1,635,000 million pop with no problem.

[purrcat33a]

Publicado originalmente por pkmis007:

What are all of you talking about ? don't u see a topic that play at 1,635,000 million pop with no problem.

It depends upon the relative definition of "no problem".

If "no problem" is that the game doesn't crash to desktop but that the population increases by a few thousand a day if the PC is left running 24/7 almost completely unattended then that is what is happening in most large city examples out in the customer base.

For me, that is unacceptable. It's the equivalent in gaming of watching paint dry.