The unity 5.1.3 release notes say that "Networking: Timing service is working now." What does this mean?

When I was using 5.1.2, UNet was working on my project and not timing out.

However, now that I'm on 5.1.3, it seems even just sending one int as a state sync(so one int variable per fixedupdate) to the server now times out my game.

Is this related to the "Networking: Timing service is working now." comment? Is the bandwidth cap even lower than it was before now?