Today i prepared gp7 for flight but bad weather did not allow me to flight but i make some tests. I found that when I run the solo app and start recording in 4k, I sometimes lose video feed. But, i connected an external monitor to hdmi on the controller and I got a video that was 720p but very stable. It may not be practical to use your phone and monitor on the same time but the video is there all the time. maybe help someone