OBS issues with Rainbow 6 Siege DX12

[xLochnessi]

So whenever i use dx12 - and I know there have been issues with dx12 games for a long time - for Rainbow Six Siege in fullscreen, the screen will flicker so badly whenever I close the game that anyone suffering from epilepsy would have to quit watching the stream. When I use borderless mode, OBS records the Uplay overlay that is not supposed to show. None of the problems above are caused using the dx11 version of the game.
Unfortunately, they will get rid of dx11 soon so I'm desperate to find a solution or workaround :)
No software in the list of known conflits is being used btw.

Thanks in advance for any input!