Interesting, the whilst I have not had a similar experience, I did notice that the 64bit client was taking ages to shut down since the update and releasing back the memory. I wonder if it's related?
J1NG
it been taking ages to shut down for me for a long time, but it comes from switching characters. each time i switch characters, the more it messes with things including:
-chat breaking
-moving the camera/mouse becoming extremely slow
-long time logging out if not force quitting.
So interestingly, as of latest testing, the 64 bit not working is only affecting my main account. I have a F2p account and it seems to be working.
I did everything like reinstalling the game, repairing the game so its not the game files. Looks like its my account.