Fps drop since 9.14 !?!???

So before 9.14 everything was fine I runed the game smoothly but after 9.13 I notice that my fps drops so much I even tried to reinstall my pc completly because I didnt reinstall it for quite long time.. So I did that and nothing helps until now.. I even asked riot they just told me to download hextech repair tool I saw other boards too on this can anyone help?
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