Champ select gets stuck multiple times resulting in leaving

I have this issues as of this week. When I enter a lobby. The timer goes to 0 and stays 0 while the rest of the players continue picking and banning. Afterwards I get back in the lobby resulting in leaving the champ select and losing LP. I tried client repair and reinstalling but nothing works. Can someone help me before I get banned for leaving too much lobbies? Thanks!
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