Yeah, that's it then - depending on how it's implemented VR fps can be less than half of monitor fps, and for DCS you need at least 45fps (ideally 90, but below that there are methods that approximate the missing frames) or it's a mess. It looks like I don't get that most of the time for Normandy while I'm fine in most case on the Georgia or Nevada map. I certainly won't risk purchasing the Persian gulf at this stage.