I'm having this issue as well. Tried checking my internet connection and I'm getting 10 mbps upload/download speeds. Not sure what else to try after resetting my cable modem and router. Any advice would be welcome.
Edit: So, someone in my fleet mentioned changing the proxy server. Didn't have a clue where the settings were though. Turns out they're under options on the game launcher. Set the proxy server to US instead of none and now it's working just fine. No more error messages or rubberbanding. Hope this helps out.