[Gameplay] Champion stops moving and does not respond to clicks

I was playing a game as Viktor and three times during the 20 minute game, my champion stood froze in its place, then returned to normal after about ten to fifteen seconds. It wouldn't move or respond to right clicks, all it would do it auto attack minions if minions were nearby. It wasn't lag because my ping didn't change and my allies/enemies moved normally, so I am not entirely sure what is causing the issue.
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