I've had RRE since it's initial release. Sometime I get a complete system shutdown for no known reason. It does not happen every single time....and only in RRE. I'll could be selecting escape, playing around in menus, etc... and I'll randomly get a system is shutting down message or the screen will go dark and the computer into a standby mode. It's really weird. It never happens if I'm on track driving. It does not appear to be a CPU, RAM or PS issue since no other application or none of the other eleven STEAM games do it.