Game crashes shortly after in game

So every few games or so my game tends to just freeze up randomly after a few minutes into a game (usually within first 2 mins). The only way to restart my game is to close League through Task Manager. When the game freezes I can still move my mouse cursor so it's only the game that just pretty much freezes. Anyone else have these issues? Started happening ever since Riot said they have to move some files (roughly patch 9.7)
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