FPS DROP after patch 7.22

Hello /sorry for my terrible english/ After patch 7.22 i have some technical problems with FPS. Before patch 7.22 i playing with 65 FPS lane (all settings: LOW) 40 FPS teamfight. After new patch my lane FPS is 40-45 (all settings: LOW) 20-17 FPS teamfight. I cant understand where in the game is lost this 25FPS who i lose??? ...I know, I know the new rune have some visual effects but this is a tottal lost of 25 FPS. I hope to give me some tips how to make game playable ..... Thank you!
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