FirefoxDriver: how to disable javascript,css and make sendKeys type instantly?

While using FirefoxDriver to write tests,

I discovered loading of pages are really slow because of javascript and css being executed. IS there anyway to disable this ? possible to even install Noscript plugin to profile ?

additionally, sendKeys(), actually types out the text. however, this is quite slow for long text, anyway to instantly type all the string int othe input box ?