We've had connectivity issues and we apologize for the inconvenience it may have caused - many people were working on it, we just couldn't provide specific times it would be corrected until we narrowed down the problem, which turned out to be several issues combined. We've made changes to the network connection that should help the majority of people that were experiencing problems (it has changed several times recently due to external factors, so it's pretty new) - we'll continue to monitor that to make sure it delivers as well as possible for everyone. This would be general unexpected lag/desync or getting errors when going back to character select, as examples. It should be mentioned that these network issues were not BattlEye related, although it's understandable for people to assume they might be, as that's a recent visible change.

We've also discovered an issue that seemed to appear at the same time which was completely unrelated, but especially affected people who had characters on the Australian servers - we're going to be addressing that coming up, but for now it is stable. Lastly there are also some people who appear to have older versions of BattlEye floating around, so we'll update with executables that detect that condition and address it automatically.

If you're wondering why it took a while, those three major things conspired to give us lots of different symptoms at once, and we had to eliminate, identify, and correct as much as possible of each, while keeping the game up and running for those who weren't having issues. There were also as often happens in networking a few false paths that we had to explore to make sure they weren't a cause, and that added in additional time. We're not yet done making all the fixes because some need testing, but we have a solid line now on the various causes.

We appreciate all the reports and help we have received from you in tracking down these issues. We will continue our efforts in stabilizing the game and get things back up and running smoothly. Thank you again for your patience.

Source: Reddit r/H1Z1