From an Ubisoft Community Manager:

“With the release of Chapter 2 for GRAW, we also released a small Title Update that addressed some network connectivity issues. Additionally, we are working on a follow up Title Update that will address further issues, including ranked games problems, controller options, and some fixes. We are also planning on adding new Achievements for GRAW for players to obtain.

Details on this update will be released when the information is finalized.”

Source

Thanks FTC759 for the heads up.