Both teams lagging and DC'ing

I just finished a game where it seems like all players were lagging, and I think everyone disconnected as well. The game started smooth until around 1:30, and it got worse as time went on. One of my teammates said that the lag was gone but everyone else was still suffering. Looking at the replay, it looks like the minions were lagging too. I can't find any info about this, is anyone else experiencing the same thing?
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