Additionally for 3D (if needed) you do not need to add a special resolution (1080p) as it works as well just that it won`t be upscaled as 4K 3D is not possible.
For me MadVR recognized that and "tells" windows to switch to 1080p 3D resolution automatically. You can still define settings for 3D within Madvr.
For me MadVR recognized that and "tells" windows to switch to 1080p 3D resolution automatically. You can still define settings for 3D within Madvr.