BUG (Game)

Ok, so I have been playing league since season 4. and ever since update 5.8, I have had nothing but bugs. It happened directly after the update. First it would load games, with only the top left corner of the screen visible. I tried it in custom games, and it still occurs. I tried a few in normal games and they still did it. So then, after I reinstalled and uninstalled, several times for each, The bug went away, but instead of fixing it, it got worse. Now it will not even load games. I will get into queue and join the game, then after the end of champion select, it never shows up, i check task manager, it says its running a game, so I have tried to exit and re join that still doesn't work. I could recreate this in any scenario it seems. So Riot, is there a bug for certain people, or is it just my computer possibly? I would like help as soon as possible, because I love this game so much.

Many thanks Lunar