I started having big issues with Go4. App crashes, horrible video and stills but it was only on my S7 but not on the downloaded videos and pix. Bought Litchi and viewed many Utube videos....extremely helpful and loving Litchi.
I had the same frustrating problem a month ago. Completely gave up on Go4 and bought and installed Litchi after given that advice.
I have made several flights with it, viewed many Utube videos and loving it.
The feed from the RC to my Samsung Galaxy S7 is horrible but the results on my micro disc is a perfect video. I have already switched to a USB cord to the bottom attachment..No change. I have already cleared the Video cache and even turned it off and no change.
My next move might be to call DJI...