Mobile - lags on the first run

I am creating a mobile game for both Android and IOS platforms. I have one issue on every device on a first run. The game freezes when any asset first time appears on the scene(static mesh, particle, etc.). Second and further runs I have stable 60 fps with no freezes.
Any advice would be great.

I spent some time investigating the root cause. So, here what I found:

Useful article -

Hope this helps someone :slight_smile:

Thanks. Any other tips? When I look around for the first time in my android game, it just freezes for several seconds and then I get 60 fps. I have a rather big landscape and the village is on the hill, so all assets load at same time even at large distances