Question Increasing Time.timeScale to 8 without effecting performance

Hi there,
I'm working on a strategy game. Where you can increase the game speed by 2, 4 and 8 times by using Time.timeScale. With 2x and 4x it works well, but with 8x it's starting to lag sometimes. I think it's normal? Right? So how can I implement 8x game speed? Is there another way?

Side Question:
There is one more doubt in my mind related to Time.timeScale which I read here
https://docs.unity3d.com/ScriptReference/Time-timeScale.html

So should I multiply Time.fixedDeltaTime by timeScale if I change timeScale? I tested the number of FixedUpdate callbacks per frame when changing timeScale, and it's already constant unrelated to timeScale.

Code (CSharp):

1. Time.fixedDeltaTime = this.fixedDeltaTime * Time.timeScale;

Thanks

 

It's not the number of FixedUpdate calls per frame that is really important for performance.
It's the number of FixedUpdate calls per second that really matters.

 

Actually this is just a side question. Yes FixedUpdate calls per second is same 50 per second irrelevant of timeScale. So should I multiply Time.fixedDeltaTime by timeScale if I change timeScale? Or not? What unity doc trying to say?

 

That's not true. If fixed timestep is 0.02 and time scale is 1, you will get 50 FixedUpdates per second. But if time scale is 2, you will get 100 FixedUpdates per second. That's why you might want to multiply time step by time scale. So you'd get back to that same 50 FixedUpdates per realtime second. This will change the fidelity of your physics simulation though.