Not long enough champion select for slow computers

The champion select needs to be longer i can only have 2 rune pages and i dont have enough time to edit the page in game if my prefered champions are banned or picked it honetly sucks trying to rush to make a page so you pick the wrong runes or you dont make it in time and it gives you one of the presets I have noe dodged twice bcause the runes take to long to make and close once im done