[Fran Tenreiro]

Fred, I've been hosting Assetto Corsa servers since early access. I can assure you the number of cars on track DOES effect your CPU as the physics of all cars on track are calculated on it, not the server.

Other titles such as Race 07, fF2, iRacing etc utilise the server for calculating physics and just broadcast the position of the car to your computer, therefore more powerful servers are required to host.

You could literally host an Assetto Corsa server on your phone.

I didn't know that I thought it works like other sims. In my case, I only saw this warning running offline