Multiseat on Mac OS? How to make 2 or more users to use the same Mac OS at the same time? As I know for windows there is Aster, for linux there is Xorg.
I researched this topic for quite some time and cannot find a satisfactory solution for mac. The only thing I could find is connecting through remote desktop to the computer in a special way. But there are a lot of problems with it:


You still have to use a spare PC to connect to the mac
Remote desktops are very slow and buggy, even video encoded like Nomachine is not suitable for gaming at all
It takes some time to connect to the remote desktop each time. Especially because of the special way you need to connect
There are no native multi-seat solutions for current macOS that allows multiple, simultaneous users on the same Mac each with their own screen, keyboard and mouse.

You can create a multi-seat solution by running Windows or Linux on the Mac instead of macOS.

In theory you could also run for example a native Linux and virtualise several macOS instances to provide multi-seat usage of macOS on the Mac. In practice, you'll have licensing worries amongst other things.