Freezing League Client

For some reason during my latest ranked game of now, i froze after i hit a plant in the midst of trying to take baron. From there i think my character just walked back to base and i got a warning about being afk. Im unsure if this is a bug you guys are trying to fix, but please try and look into it. For a visual example, league streamer LL Styles had, what seemed to be, the same problem. Go to this link : https://www.youtube.com/watch?v=bMRxyOhRms0 and skip to 2:45 to see what i am talking about. Im pretty sure its not a pc problem since I've been fine playing league until the recent last 2 patches.