Client crash during game & champ select.

Ever since the champ masteries patch, I've been getting disconnected from PvP.net messages. things ahve been buggy all around. i'll just list some of the symptoms I've been getting.

• Disconnected from champ select chat, unable to chat. unable to receive chat. flickers on and off. I'll be able to receive chats, then wont be able to
• champ select and summoner spells selection lags. It'll lag to the point where it'll say theres an error and it wont select what I wanted.
• LoL client crashes during champ select causing me to receive a leave game drop in points in ranked.
• LoL client crashes during gameplay. it wont affect my game, but as soon as I finish the game, I would have to restart client.
• reconnect to game error when I have already finished the game.
• unable to go to after game screen, meaning i'm unable to chat with team and other team, see stats, or report players.
• game ready select yes or no; When duo que with a friend. he says that I did not ready up in time when I have not even seen the ready up screen.

There are a few more issues, but these are the biggest ones. Especially the LoL client crashing during champ select. I feel that giving me a que timer and drop in score for something that was not my fault is ridiculous