how can I make digital editions show as one page continuous? (and another question)

hi, I am currently reading a book on digital editions and scrolling with my trackpad is very slow, using the up and down arrows will only go a page before it stops responding and forcing me to use the trackpad. It is a large book but I want to make the scrolling speed faster. any recommendations? and how do I set it up as one page continuous?

also, is there a way to have the file scroll one page at a time? i.e. using the arrow keys to move one page at a time?

I am on windows 10 and using everything up to date.