How to test 2 player VR with one computer and one Rift?

I am starting to need to test out my networking / replication functionality further with my Rift controlling/displaying for at least one of the players.
But every time I try to launch 2 player PIE VR Preview the editor crashes on me.

Has anyone got this to work?

I am trying setting Stereo OFF in the Level Blueprint but that does not seem to work.

EDIT: I do have a solution that works for packaged versions of the game but obviously this makes iteration times much longer.
So if anyone has any tips for doing this kind of stuff in PIE I would love to hear them.

Cheers