Zombies a ghost town on Xbone?

I've had the game for 3 weeks and I have only been able to find one Zombies game in all that time. Certainly that can't be right? The closest I've come since is 3 people sitting in a lobby like fools, waiting for a 4th.

My ports are forwarded and I get open NAT settings. Is there anything else I can do to increase my chances of finding a match? I can't imagine that on Xbox of all consoles, nobody is playing Zombies mode.