I had the same issue.
Mavic Pro, Nexus 6P 8.1 Oreo, DJI Go 4: V4.2.21, fw, v01.04.0400
Reverting to older DJI GO APP 4.2.16 helped.
I also noticed difference between versions of the app in transmission mode; latest version has additional "smooth mode".
I guess DJI needs to fix this quickly...