Well, can't be 100% certain, but going off mtr the issue seems to be pretty focused on one step in particular.
Normal play the reports more or less look like this
But when the game is frozen up in the period right before it entirely kicks me back to menu, or out of the game if I'm trying to log in, it looks like this.
Like has been said a few times now, seems to be an issue with ntt, I assume (or a link between them and telstra?).
I was in a frontline match when this occurred, though I doubt it matters, and it's happened in a heap of different contexts anyway. Happened at around 8:10pm AEST today, so 2022-06-06.