Hey V4van,
NorthBury Grove uses "Exclusive full screen" to take advantage of of the "Nvidia Experience" and allow for native recording and streaming of the game.
I took a look around the OBS forums and found a somewhat similar problem with a potential fix,
Monitor capture appears to be what you're using -- you can't use monitor capture to capture a fullscreen game. You must use game capture for fullscreen games, otherwise the game must be run in borderless/windowed mode for monitor capture to pick it up..
Let me know if that helps whatsoever.
Best,
Kaleb