Possible In-Game Exploit

In a ranked game just played I suddenly lagged out even before laning had started. I received the "attempting to reconnect" message, and a few seconds later the problem subsided. Right as I lagged the opposing team was invading. They were able to secure an early kill, and while I didn't die, I was unable to react to help. A very unlucky situation indeed... Or so I thought.

A few minutes into laning the lag suddenly returned, and once again quickly went away. Strangely enough, the enemy team was again grouping and ganking right at that moment. How strange.. To get lag at that exact moment... again...

**By the end of the game it was quite obvious what was going on. I was able to predict every time the enemy team was making a move because I would lag right at that moment, and either be late to the fight, or suddenly surrounded by enemies. **

Perhaps this particular exploit is already known, but if not I am reporting it here. As I said, this was in ranked. If I come across it again will probably stop playing League all together until it is fixed. Not because I am angry with Riot Games in any way, but the game will simply be unenjoyable.

Hope this can be addressed, thank you.

Edit:

So I've been playing more games (normal, not ranked) and there is definitely something going on, but can't be certain it's any individual player causing it. Seems that when certain enemies become visible there is this sudden massive spike of latency. Obviously exactly what is causing this is unknown.

I got home yesterday evening, ran the launcher, the game patched, and then these issues started. It may be some unintended bug was included in the most recent update. This would be a much better alternative then player controllable exploits.