Problem with starting TFT game with a random champion

Hello everyone. Since 9.19 patch I'm so tired of loading into tft games too late to choose any champion or item I want. My loading screen just freezes and doesn't let me to join the game with other players. I saw many posts with this at boards, even tried to use support, but they surerly tell me that the problem is with my pc (as always) and still can't find any solution. Your ideas?
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