XR Plugin cause Pico Crash

Hi,

We are developping VR application to work as well with Oculus Quest 2 and Pico G2 4K Series.

At this point, we have installed (uncheck) the Oculus XR plug-in and the PicoXR Plug-in in the Plug-in Management.

When we tick only the Oculus XR plug-in, it's working correctly on the Quest 2.

When we tick only the PicoXR plug-in, we have a blackscreen on the Pico headset.

But when we uninstall the Oculus XR plug-in, it's working correctly on the Pico G2 4K Series.

Do you have an idea why this happens? Does the Oculus XR plug-in keep trying to start on Pico even if it is uncheck?

Our Unity setup : 
Unity 2019.4.32f

Pico XR plug-in : v1.2.5

Oculus XR plug-in : v1.10.0

XR Plug-in Management : v4.2.0

Thank you for the reply