Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
I've found that iPad pro refreshes occasionally if you're constantly switching apps. If I'm just in safari with four to five tabs it doesn't refresh. I don't use more than that. If I have a keyboard attached I've found an easy way to not touch the screen is just open a new tab to search then I close them as I go along.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.