[] Ocean surface simulation (VaOcean)

Hi, I have some questions!

When I launch the game, Warning message shows it “this map is using externally referenced packages which won’t be found when in a game and all references will be broken.”

Of course, I tried ignore this message. But It works very weird. when I Play the game In Viewport, It works very well. but When I try to play the game by “the Launch” or after packaging the game, It works really weird…

The ocean is under the object, but it’s too low place… I will show the problems

after launching the game, my pawn is bumping up to the sky at the one moment!!!

OMG… Anybody can help me? of course, I’ve checked Z location of VaoceanActorsimple and BP_VaOcean_Simple… both are “0”!

I can’t solve it…