Am I the only one who can almost not play on a slowish mobile network speed anymore?

I used to be able to play with no problem until the update that brought the "cannot login" issue a while ago. Now, I take almost 10 min just to load the main page. Trying to join a raid battle before it finishes is also mission impossible since i have to wait (at least) 2/3 min at least to exit the loading screen and enter the fight