FPS issue

I have yet to fix this issue i have been having since the recent patch. My FPS has dropped horrendously and drops even more whenever my champ does an action. Prior to this patch, i ran at over 200 FPS at all times. now i can barely hit 99 FPS and when i just go to move my champ, it drops to about 55 FPS, and when they just auto attack, it drops to about 23 FPS. forget team fights because it looks like a picture book, turning pages...

Is there any way to fix this issue? I have tried to reinstall the game an still the same issues.