Switching to P2P does not seem to take.

[SammerJammer]

I'm not clear on the specific steps you took, so forgive me if I'm stating what you already know (perhaps others reading this will not know). You have to be out of a session to make changes to your Network Settings. Also, since the ARS is relatively new, I've been selecting "Prefer lowest latency path" though I'm almost always online with the same person, most likely always in peer to peer mode.

Specific steps? We each changed our network path preference to P2P.

I was not aware you need to be out of a session to make changes to network path. I don't recall seeing instructions to that effect. The option should not be available when in session if it cannot be applied (or it should indicate that one must leave then re-enter to have it take effect).

We will try again when 'out of session' and see if we can then all enter a session as P2P.