This was what happened last night when I played League and I thought it was fairly interesting. I played some games of TTL with a couple of friends around midnight eastern time(my time zone) and was surprised to find my ping the best it has ever been and my fps stable enough to play. I did not lag a single time in any of the games. However, a friend of mine who never gets lag whatsoever, complained that she was getting slammed with it. Her FPS that is a normally stable 30 or 29, was down in around 17 and such, making her unable to react in time and die needlessly. Then this morning, we did a custom game to test out some builds/runes and my lag returned. It was so bad that I had to quit the game even before it began.