OBS dont do gamecaptures anymore

Hy sorry for my bad english if you are german i speak about "Spielaufnahme"

If i select the source gamecapture it stay's black or freezes (Not OBS the Preview)

I already reinstalled OBS but still nothing. I do screen capture for now but if i wanna add a Virtuel Avatar and stuff and i constandly need the programms to be in the front because Game Caputres does not work it gets realy annoying fast.

I attach the log txt from today.

My PC?
GPU: Nividia Geforce RTX 3060Ti
CPU: Intel Core i7 11700
Ram: Corsair Vengean 3200 mhz DDR4 4x8gb
OS: Windows 10 Home

You likely have a conflicting program installed

Maybe MSI Afterbruner ? Its the only programm i instelled. But why does OBS work normaly excapt for game gaputure ?

Problem Solved. It was indeed MSI After Burner wich caused the Problem thanks to @Harold and @PaiSand for the help ^.^