I read another question in Ask Different about why applications have to be reloaded when you switch to another application and you come back, and I think it's the same for Android.
But why does not this happen on the split screen?
For example, when I am using an application that consumes resources (pokémon Go, for example), if I change to another application and I stay too long with it, the system will eliminate other applications (possibly the first one that consumes more), and when I return to the game, I'll have to face the (long) load again.
However, I can divide the screen while I play, have the game in one half and any other application in the other.
Why is it so different? If the system is capable of running Youtube and Pokémon Go at the same time, why does it kill Pokémon Go if I do a single search on the YouTube application when it is not split?
If the system "locks up" Pokémon Go and kills other applications when it is split, can not I "lock" it in normal mode as well?