Why is my iPhone scrolling choppy?
This is because of the bad implementation apple did for variable refresh rate , it is dropping too low when scrolling slowly and it looks terrible. There should really be a minimum fps when scrolling. This is an apple iOS implementation issue specific to new iPhones.
How can I make my iPhone scroll easier?
In other words, you scroll faster on your iPhone or iPad by holding down on the scroller for a moment and then dragging it up or down. For those wondering, it's a system-wide gesture. You must first trigger the scroll bar by scrolling some, then touch and hold the scroll bar itself a bit.