Patch 8.14 FPS Drop

Normally when I play League, I start the game with 120 FPS which drops down to 60 FPS later in the game during team fights. This was at high settings. With the new update, I begin the game with 80 FPS which rapidly drops to 40 in lane and 20-30 in team fights. This patch turned League into a turn based role playing game for me, and I can't find an explanation why. I tried lowering my settings, uninstalling and reinstalling drivers, NVIDIA GeForce, and even uninstalling League. None of these solved the problems, and I can't find a fix online. The closest thing I saw to an answer was an EUW post which had replies that just said "Git gud computer hehe". I'm posting this on NA in hopes of finding a solution. Any ideas?