Looks like they are fixing this in Firefox 55, at least JS perf should jump a lot
On a snapdragon 835 phone, Chrome latest.
Better than I expected, actually. In the vague ballpark of 2016 Macbook under Safari (69), and a tad faster than a 2014 iPad Air 2 (48).
iPhone 8 just executed a fatality here
I just re ran iPhone 7 and it is 117.
2017 iPad Pro still at 149 in iOS 11.
Oneplus 5 results on Chrome latest
Kudos to the Chrome v8 team this is a 10% improvement for free over the last time I had this device in hand, just a few months ago.