1 FPS in game only in new client?

Ok so my league updated to where the Alpha client is now the only client, but something about that change makes it to where I have 1 FPS in game. I have never had FPS problems in game before, not even when the alpha was separate from the other client. I moved all the settings to absolute lowest, disabled character inking, and of course checked that nothing else was running. I even closed the client itself and left the game going and it didn't help. I do not have any of these problems in the PBE either, so I'm really confused. Are there any tips anyone has to fix this? *update:* This only happens in ranked around the 20 min mark.
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