As you can see, it’s a common recommendation to use RecyclerList + LazyLoading
(I had already suggested it to you in another of your topics 
)
But we all agree because RecyclerList is very performant since, simply put, it renders only the items that are on screen, which makes it really smooth and without “slowdowns”
However, you can achieve this only after studying how they work 
Some time ago I created a guide, try taking a look at it.
Then, if you need to better understand how the extension works, feel free to refer to this reply