Question / Help OBS Gamecapture blackscreen after Closing/Re-opening Game

Hey guys,
firstly: This is one of my first Posts in any Forums so tryna' keep calm about that.

CPU: Intel Core i7-4790 3.6GHz
GPU: NVIDIA GeForce GTX 1060 6GB
RAM: 8GB Dual DDR3 Team Group Inc.
Mainboard: ASRock H97 Performance
Windows 10 64-Bit

Newest OBS Version. Everything else also up to date I guess.

I start/restart my PC, join the Game - start after OBS and I can record or stream any Game. Everything is fine.
But if I need to restart the game or Game crashes or I wanna play another game etc... the Gamecapture is showing a blackscreen - sure if there is no game, there is a blackscreen - all right. But if I am back ingame (like in the screens) the game capture dont reconnect. Btw its also showing/recording/streaming a blackscreen if I start OBS before I join the Game. So I need to Start the Game I wanna play always first and OBS after to stream or record once! And that means, that I always need to restart my Computer if I want to record or stream. I tried to close OBS first, than the Game, opening Game, starting OBS and there is still a blackscreen. I tried on all the ways I know and tried to fix it for my own, multiple times... For me there is no Chance - I always need to restart my PC to get 1 Try record/streaming in 1 Game... I always need to end my streams and going offline shortly because of that... I am honestly at the end of my feasibility.

OBS Settings from this Tutorial:
Nearly 1:1, just changed resolution things I guess...

Screen of Issue:

If u need any more information be sure to contact me, thanks for helping!
U can contact me also here:

Have a nice day