What can cause slow updates and scrolling in an application list?

Slowing down the update and scrolling of a list in an app can be caused by several reasons:

• Heavy operations on the main thread — for example, loading data or processing images without using background threads.
• Lack of reusing list items — if an incorrect adapter is used or ViewHolder is not applied (this is built-in in RecyclerView).
• Large volume of data without pagination — loading and displaying too many items at once.
• Complex or heavy list item layouts — a large number of nested Views, complex animations.
• Frequent UI update calls — for example, calling notifyDataSetChanged() unnecessarily.

To improve performance, it is recommended to use RecyclerView with ViewHolder, load data asynchronously, optimize layouts, and implement pagination.