[knuthsat]

yes, on Nexus 5X that I've had since 2016, chrome and firefox are very slow until they render the page, then scrolling works ok.

on iPhone 6 everything is still pretty responsive.

[ahelwer]

I ended up moving off the 5X because it didn't have enough memory to keep a firefox page loaded when switching between apps. Have a Moto X4 now which works pretty well.