DX12 just decrease the CPU load compared to DX11, but its the same.
It need to check windowed mode. My actuall testing path was with fullscreen only.
I guess the ISLC Tool is helping a little bit, but only for the long stutter. But i have to confirm this as well.
I made a 4hrs flight yesterday and tried to find out what exactly could be the problem but so far nothing really found.
I made a video from the frame drop during moving OBS from one monitor to the other. It’s similiar to other movements and toogling. You can clearly see, that it is not a “limited by main thread” only thing and my GPU and CPU are sleeping meanwhile.