[Gameplay] Off Scale Level & Summoner Name / Occasional Freezes

I have been having this problem for quite some time now. It can be very annoying when trying to CS. I have traded reinstalling League Of Legends and repairing it, I still got no results. When the game freezes the music would play in the background and I can't even exit League. I would have to restart my computer.

Please help with this problem Thanks for reading.