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A comment on Cities Skylines 2 runs with 20fps on an Nvidia RTX4090. Parent comment

Re:Cities Skylines 2 runs with 20fps on an Nvidia RTX4090 by brucethemoose2 on Thursday October 26, 2023 @02:58PM (#38030203)
> Most of them are not paragons of optimization (well, except maybe Factorio). But these are not action games so FPS is not really something I personally optimize for and I don't necessarily understand the importance of benchmarking it against, like, Cyberpunk.

In many of these games, FPS is correlated with simulation speed.

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Re:Cities Skylines 2 runs with 20fps on an Nvidia RTX4090 by legitster on Thursday October 26, 2023 @03:09PM (#38030357)
Uhhh, this doesn't even make sense. Simulation speed is usually controlled by a button.
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Re:Cities Skylines 2 runs with 20fps on an Nvidia RTX4090 by Tadpole9181 on Thursday October 26, 2023 @04:37PM (#38031390)
It makes perfect sense. Simulations are done in discrete time chunks, as the framerate drops and those time chunks grow larger there are two choices: make the simulation bad, or make the world slow down.

If you don't adjust simulation rate you start seeing higher instances of objects phasing through each other, collisions not preserving energy correctly, pathfinding just fundamentally breaking.

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Re:Cities Skylines 2 runs with 20fps on an Nvidia RTX4090 by brucethemoose2 on Thursday October 26, 2023 @04:51PM (#38031539)
Well ideally sim "ticks" are completely seperate from rendering, but this is not the reality in many games where they share the same thread, or where cross communication (like UI stuff) blocks enough to slow the other component down.

Even in Minecraft, with its completely seperate server/client, the rendering can bog down TPS due to JVM pauses and other reasons I don't even understand.

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Re:Cities Skylines 2 runs with 20fps on an Nvidia RTX4090 by anticensor on Friday October 27, 2023 @02:50AM (#38035465)
> Well ideally sim "ticks" are completely seperate from rendering

I have a counterexample: there was a game called der Omnibussimulator, in which the simulation and rendering were 1:1 coupled.

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Re:Cities Skylines 2 runs with 20fps on an Nvidia RTX4090 by legitster on Thursday October 26, 2023 @05:50PM (#38032144)
But the simulation can be done as fast the CPU dictates. If the GPU has to drop frames to keep up, it doesn't impact the simulation.
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Re:Cities Skylines 2 runs with 20fps on an Nvidia RTX4090 by mvdtnz on Thursday October 26, 2023 @02:59PM (#38030234)
Not in Cities Skylines 2.
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