Game Source Disappears for 2 seconds when switching Scenes

[SuperUser123]

I use a Stream Deck to toggle between scenes,
I have a vtuber that is standing in the same spot between scenes.
When I used facerig there was no delay.
With Vtube studio - my character disappears for 2 seconds when switching to the next scene.
Any idea why there is a delay? Even though the window ( vtube studio ) is open and running?
This doesnt happen, while cropping onto the game window ( selecting monitor as the source )

 

[cyclemat]

mmmh didnt know it helps but copy past the source from scene to scene as Duplicate ! i meant thats help
other workaround is create a scene with the char in fullscreen and use the scene as source ! so i mean obs didnt stop render it !