The Multiplayer loaded for me almost seamlessly. I selected Multiplayer game, and none was found, but a list of open games was brought up anyhow, so I selected the first one, and it loaded quickly and smoothly. Then during game play there mas no slowdown, no studder, and very smooth control.

Big Kudos that I can use my 360 controller to climb walls as an Alien without doing any tweaking.

I will keep testing, and playing as time permits.