Unity list view implementation problem, how to fix?

Question

C++ / C#

I have 1000 objects to display which I use scroll view. I show 60 objects at the start, when I drag down, I load +10 down and remove -10 from above. The problem is that because the container of objects always remains the same height (as I do +10 and -10), scrolling does not work. It turns out the effect of replacing some objects with others. The lower ones move up and vice versa. How can I implement normal scrolling with subloading? What are some ideas?