How good/bad is multiseat?

Question

Computers

Have any guys used such a feature as multiseat (this is when 2 or more users can work with their desktop without interfering with others, but everything happens on 1 PC, as I understand it)?
At the moment I want to assemble 1 good PC for 2 of them, because I am engaged in programming, and the girl is a web designer, but I personally have never tried this system myself.
Does this system have any disadvantages other than those that the tables will need to be placed closer?

Answer 1

In a purely practical way, the issue can be solved in this way, provided that the mother supports device forwarding (usually it starts up on AsRock Pro4, but in each case you need to either google or test), and this is not obvious and there is no chip binding, it is only checked practically, well, or searched for config on the network with a description of those who succeeded:
1. The second VC is purchased and installed in the second slot of the motherboard. The monitor + mouse and keyboard are also bought there. Sound - either monitor speakers via DP / hdmi, or internal audio via PCI-Exp, or external via USB, in a particularly stubborn case - a USB audio headset.
2. Any Linux KVM + QEMU is installed and configured (as a special case of Proxmox), 2 separate VMs are made, with a separate forwarding of sound and video cards.
3. Each VC has its own monitor. Each VM is set to autostart.
How to set up look here: my article about ProxMox https://m.habr.com/en/post/437598/
If it starts up, then there will be no lags.