Something that may help others, I was getting very long "not responding" pauses in the game, both in the menus and in-session, after the patch, but after putting Steam in offline mode (which also disables online features in the game) these have stopped. In general all the menus are much snappier and responsive after doing this, but I guess I'm not earning FXP or LXP any more and am locked out of more moments. Hopefully it's something they fix soon, I have fiber internet so it must be doing something weird.