In my case i have a bug in newest stable OBS 27.1.1 with Display capture and Capture method Automatic settings, then I have "light gray picture" in preview or recording file. It is only ok when I choose Windows 10 (1903 and up).
I have APU AMD Ryzen 5600g and the newest WQHL graphics cards drivers or even on newest 21.9.2.
In 27.0.1 OBS it is all OK.
I have APU AMD Ryzen 5600g and the newest WQHL graphics cards drivers or even on newest 21.9.2.
In 27.0.1 OBS it is all OK.