Rendering Issues

One of our architects has been tasked with rendering drawings out of AutoCAD. He uses Sketchup with a Vray plugin.
We purchased and i7 4770k, 16GB RAM, Geforce 780Ti, SSD.

On certain renders it works 100% but on larger drawings his Sketchup bombs out.

Is the system we have no sufficient?

perhaps similar, as ‘bombs out’ does not really state the problem