All the applications are updated to lasted versions, and DJI matrice 600 firmware too.
In all cases, DJI GO (not DJI Go 4, because it do not recognize this Matrice 600) dows not run at the same time. I have take care about it.
Attached send two images, one with DJI Go and Pix4DCapture snapshot showing that with DJI Go i can show video from X3 camera and with Pix4DCapture not.
Another related issue is that Pix4DCapture does not connect to DJI Matrice if it is not removed and the USB cable is put on the dji lightbridge 2 remote controller.
The issue persists.
In the DJI Matrice 600 we have mounted an auxiliary camera that can do FPV while the main one (X3, X5, etc …) works, but it is configured that the video that delivers is that of the X3.