Four TVs 2x2 half-flipped portrait Mosaic setup

Hello everybody,

We are currently trying to do a Mosaic setup consisting of four TVs, in portrait mode, with two of them being upside down, in order to minimize the border between the TVs.

See drawing here:

We tried to create the mosaic setup using a Quadro RTX5000, a RTX A4000 and a RTX A5000, with several versions of the drivers, but none of these seemed to work.

We tried either using the mosaic wizard, either using the configure mosaic command line tool, but each time we got an error, or a landscape setup, or at best a portrait setup with two TVs being upside down.

However, we are able to get this setup by using the regular Windows Display Settings, by setting two displays in portrait mode, and the two others in flipped portrait mode. But this windows setup does not allow to launch programs in full screen over the four displays, which is the final goal.

What do we miss?
What should we do to get it to work ?
Thanks,

Laurent
Cortex Productions