Here are my settings for GyroFlow with the Caddx Walksnail Moonlight @ 4K 30FPS on a Finwing XBird.
Using Gyroflow 1.5.4 because 1.6.0 didn't work with the Moonlight motion files at the time of this post.
Lens profile - Github lens profile list
Smoothness = 0.200 (reduced from default of 0.500) for a more natural fixed wing flight look rather than DJI Drone style super stabilised.Lens correction strength = 20% (reduced from default of 100%) to retain a wider view rather than totally correcting the fisheye.
The exported GyroFlow result is 4K 30fps but I have to make the Final Cut project 29.97fps to avoid jumpy video. I don't understand why but it works.
Video using the above settings.