Really weird clock/loading bug

I loaded into the game and the clock was at 5 seconds, but my team had already left the fountain. I can't explain the rest of the video, but it looks like the client was trying to make up for lost time, including randomly skipping my champion forward/backward. It's a 1:07 video, but 1:25 elapses in game.

http://plays.tv/video/5907c0474beaabd504/what-the-hell-watch-the-clock-