I feel cheated out of Ranked because of these 7.4 bugs

I'm really frustrated by these 7.4 technical issue. I tested out an ARAM game to see if I have any issues since I been hearing horror stories of 7.4. The game went fine so I thought playing Ranked was OK 1st. My client exited out for some reason during champ select but the game still went through even though pick phase wasn't finished, making me join the game at 4 minute because my team didn't remake for some reason. By the time I joined, my lane opponent already got fed and snowballed. 2nd.I experienced extremely low FPS in the 2nd game which made playing Jhin impossible. I have around 60 FPS normally but last game dropped down to below 10
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