Terrible Lag issues with Client Beta

Dont want this fancy garbage if its goona ruin my chances of pickign my champion or logging in, whats with that? the Lag is ridiculous, cant be my computer spec's becausee the client is just an interface, never had a interface run that bad.... if you would please riot set me up with some kind of special download so i dont have to use that garbage i would appreicate it. If not Well ive been playing for years but guess ill just have to move on.