Why EVERY BeginPlay on Client not called on the first frame?

Level Blueprint creates loading screen. On Server everything as expected but on Client EVERY BeginPlay is delayed, if it’s an Actor, Game states, Controllers, LEVEL BLUEPRINT etc.

My loading screen on client is delayed.
loadingscreentest

Only in GameInstance Event Init called on first frame. But its useless for me, game starts in main menu level.

How can i make Client’s BeginPlay on first frame?