Well, early indications are that my Test bench is stable (2hrs flight,I get this error within 15 mins on the other PC) - but it is a very stripped back install of Flight Sim, Win 10, and no other peripherals/add ins installed.
I stripped all add in content including world updates out of my main install and still got the error 15 mins into Patagonia Leg 2.
Todays crashes.