I'm having a hell of a time getting Assetto Corsa working right. 
Nothing shows in my headset, just "Up Next", so I take it off and go over to my computer, where the game is running and sitting at menus. I make sure everything is set to what I think is correct, my rendering option is my Rift. Still nothing on my rift, so I pick a car, pick a course, click start and suddenly i'm shown the VR mirror, so I pop my headset on and it's working! Except i've got no controls, nothing I can do, not even bring up SteamVR overlay. 

Is this really one of those "You're going to have to keep taking off and putting on your headset" games? They couldn't provide even basic VR menus?