I tried multiple times and ways to make popup displays working, with no success. I use a 4 monitor setup, with 2, 3 and 4 being extended desktop of the main 1. Only non-clickable displays are usable and this is very frustrating.
I also use (with all other buses) an external tablet via network as MCDU. But I didn't find any ip and port to use with this 350.
Having to stick with the virtual cockpit only it's really a pity.