I know this is an old post, but Sketchup 2015 didn't have this feature, so I am going to bump!
@ely862me said:
If Layout can be ran in two instances, like Sketchup, then you just need to put one instance to produce renders and work out your files in the other instance. Make sure you set your processors affinity in Task Manager if it is the case.
I am not sure if I understand you, or if you haven't quite understood me! If you can indeed run LayOut in two instances with a PC, that sounds very useful (I am Mac only at the moment).
In the picture below, it illustrates what I am wanting to achieve:
Render while you work
The idea being that you can work away on other parts of the drawings while the individual views update. It's a technical challenge for the Sketchup team, which I am sure can be solved, and the rewards are higher levels of productivity for us LayOut users whose models (and ambitions) are getting bigger.