Wow... This is actually insane and i've never ever had this before. On this pc with the same internet i used to have settings on medium or high, but now even on very low i get insane fps drops in fights, can barely play and hitboxes dont match the game. Especially bad on the new map where it's next to impossible to play.
Please just give an answer to us riot. The boards have been flooded with this exact problem and you always dont answer. Its not my pc it actually is your game this time around sadly.
edit: whole screen was just bugged as well. Jumping from place to place and having grey squares in it. Never ever happened before either - might be related.
next edit: just got an error 900 aswell???