This works fine.
I’m on PTC but since I have installed the app, so this doesn’t solve the isse for me.
I have RTX3080 w. 12GB (DX11 in MSFS) and have never had any problems with VRAM being overloaded, but will check this using some VRAM monitoring tools. Encode bit rate set to 250, refresh rate 72Hz w. headset resolution 5408 x 2736.