Yes, it crashes. Without any specific error. The error wants to send the results to Microsoft and I'm holding back for now.
This occurs at any resolution. Detail is too low to be a major problem -
Detail - .65
GI Sample - 1
GI Detail - 1
Surface GI is on
No reflection. I was using heavy displacement, but no longer. The only displacement I have now is for the heightfields and it isn't above 3000. I think the most demanding thing is having so many heightfields, but I'm not sure about that. I've since moved to something else, but would happily try anything or forward the TGD. But, the 5 heightfields I am loading are rather large in size. Maybe they're the problem, due to some gymnastics I'm trying with one in particular, which is a volcano I created in Bryce and exported through Terragen .9.