my LoL is so laggy i dosnt let me ban or lock in

Captured with Lightshot
basicly I keep lagging for no reason my internet is fine its happened for the last 3 days and I still have problems I cant type in chats I cant lock in my pick I can ban. its mainly creating a game and champ select that it happens ingame is fine I stay at a steady 100 fps 35 ms at all times so i dont know whats happening ive tried reinstalling LoL and still have the isue and I'm losing lp because of it
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