Question How to calculate physics faster with desired framerate

Sorry for ambiguity of title, I couldnt find correct phrase for it
What I want to do is I want to make a turn based multiplayer game includes physics calculations, I've learnt that I could calculate physics on server side with Unity headless build and I can store movement and rotation vectors of each players in Update relative to every frame, but an Update() call means 1 frame so if I want to calculate 3 minutes with 30 fps I should wait 3 minutes in real time
I dont want to wait on server side that much, what should I do in order to both keep framerate to 30fps and simulate physics faster with good performance?

 

Take a look at Physics.Simulate

 

Another amazing Unity feature I didnt know about, thanks It works good. Do you possibly know any replay library that I can store frame by frame in server and play on client side. I know it doesnt seem like a hard thing to do but if there is a framework or library etc. to do it I would rather to use that thats why I'm asking

 

Sorry I don't know.