Recyclerview不会使用大型数据集进行动画处理

I'm making an app which has a few screens of movies, one of which is loaded from a scraper of imdbs top 250 list of movies of all time. I was trying to implement an animation when the cards load but to no avail. Eventually I narrowed the problem down to the fact that the dataset was so large. When I change the variable loadHowMany to 25 or fewer the animation loads fine. Do I have to implement some kind of infinite scroll feature or is there a way to animate this large dataset?I'm making an app which has a few screens of mo