FPS decreasing by a load when close to dying.

So, I've gotten into League again after not playing for like a year or so been playing for a few months now and noticed something. Whenever I'm close to dying I'll get a huge FPS spike which basically freezes my game for a second or so, which is honestly pretty annoying since that kind of ruins my game experience because it's extremely difficult survive. (Incase you're wondering, here are my PC specs: http://i.imgur.com/bIppCf7.png ) is there possibly a fix for this, and if not could there be one in the near future?