Bug That Causes In Game Loading Screen to Crash?

So, twice in my promos, I get into a game, select my champ, and when I get into the loading screen everything freezes. I can't even alt+f4 to get out. My friends said it happens to them too, so I know it's not my computer. Riot please fix this. I'm losing LP/Promos because this happens a lot. {{sticker:slayer-jinx-unamused}}
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