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Using the observable collection, I am implementing infinite scroll and adding 50 additional rows to the end of the listview as the 30th row from the bottom appears on screen. This causes stutters and frame drops each and every time. I also tried it with data cached on the client as to eliminate its connection with the http request and have seen the same result regardless.
It happens both on Android and iOS.
There is no performance issue when scrolling as long as additional rows are not added.
Here is the basic layout I am using as a row:
The layout structure you are using for a single row's view is going to have severe performance implications in your use case. I suggest making adjustments to your layout to minimize the number of nested StackLayouts in particular.
Using RecycleElement seems to solve the performance issue but unfortunately it cannot be used because of the numerous severe bugs it possesses, especially on iOS:(