Yeah for rooms, I made a mistake when I was hosting : when seifer59 joined, the countdown already started and I tried to stop it to let him join but I left the room. When I came back, he was the host and set it to rapier.
Fortunately, we were all mind-synchronized and left for another room, in Phantom of course

I have to say I had no issue with connection or FPS. I don't see any change in OFW, except loadings are a bit longer.