[CRASH][BUG][CLIENT]Alright Patch 4.21 FPS Drop

Alright I know that i wrote that it was 4.21 but it was actually from the patch before the beta summoners rift till now I don't have a video right now but ill post one later but it still happens when certain champs or certain animations go off there is a huge fps drop but it doesn't on the FPS counter it especially gets seriously bad when the team fights break out past around 15 min or around 30 - 35 when the nexus towers start to go does I don't know about everyone else but all champions all animations cease to exist champions, minions, destroyed turrets are at a stand still. Right up until the game has finish and you will see all the animations go on that you haven't seen in the past minute or too and you either see VICTORY or the dreadful DEFEAT sign.

I do not use lolrecorder/replay nor do I use any 3rd party software while I play. If anyone knows any fixes i'm open to try them.