Well, I'm running 5 on one PC, been doing it for over a month with 0 lag. Nothing has changed about my setup, and there is no graphical lag, I can flip to any of my clones and get full FPS, its only the network latency that is affected (the green bar next to the bags is yellow on only 2 clones, and shows a ping of 400+ms whereas the main and other 2 clones show <75ms and green).

The only issue it causes is follow breaking, but its so bad to the point that I can't use a mount at all because those 2 clones (its not the same clones every time, its usually 1 or 2 random ones) will lose follow almost immediately.

Any other ideas?