Site is ad hell on an iPhone.
The next very best solution is to install Firefox. Then add UBlock Origin. Now all the websites are fat trimmed and lean. I often endup having 200 pr more open tabs on mobile and it has never been a problem (Open tabs double as ToBeRead list) . May be it has crashed twice in the past 2 years. I have never lost a tab during the crash, a power failure or a restart. Always quite fast.
Actually it makes a lot more sense to have Firefox on Mobile than the desktop as it is the only browser (as far as I know) that allows you to block ads.